Add description and homepage to all packages

packages/ffmpeg.rb

 require 'package'
 
 class Ffmpeg < Package
+  description 'A complete, cross-platform solution to record, convert and stream audio and video.'
+  homepage 'https://ffmpeg.org/'
   version '3.3.1'
   source_url 'https://ffmpeg.org/releases/ffmpeg-3.3.1.tar.xz'
   source_sha1 'ace4539bbb1ef9abb59842137b2a206ca5659f36'

packages/fribidi.rb

 require 'package'
 
 class Fribidi < Package
+  description 'GNU FriBidi is an implementation of the Unicode Bidirectional Algorithm (bidi).'
+  homepage 'https://www.fribidi.org/'
   version '0.19.7'
   source_url 'https://www.fribidi.org/download/fribidi-0.19.7.tar.bz2'
   source_sha1 'e470e078eafe6c065708def3e037c129c0d7367d'

packages/libass.rb

 require 'package'
 
 class Libass < Package
+  description 'A portable subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format.'
+  homepage 'https://github.com/libass/libass'
   version '0.13.6'
   source_url 'https://github.com/libass/libass/archive/0.13.6.tar.gz'
   source_sha1 '10fc35f8aba2a4a37aaed482a4184d144defb3d8'

packages/libfdkaac.rb

 require 'package'
 
 class Libfdkaac < Package
+  description 'A standalone library of the Fraunhofer FDK AAC code from Android.'
+  homepage 'https://github.com/mstorsjo/fdk-aac/'
   version '0.1.5'
   source_url 'https://github.com/mstorsjo/fdk-aac/archive/v0.1.5.tar.gz'
   source_sha1 '2894bd6d21066bfdf65a2f8cb6d2ca2dde597194'

packages/libfrei0r.rb

 require 'package'
 
 class Libfrei0r < Package
+  description 'Minimalistic API for a collection of free video effect plugins.'
+  homepage 'https://frei0r.dyne.org/'
   version '1.6.0'
   source_url 'https://github.com/dyne/frei0r/archive/v1.6.0.tar.gz'
   source_sha1 'a8214add5828e20ff49239ed3a462acaa8c1ebb2'

packages/libmp3lame.rb

 require 'package'
 
 class Libmp3lame < Package
+  description 'LAME is a high quality MPEG Audio Layer III (MP3) encoder licensed under the LGPL.'
+  homepage 'http://lame.sourceforge.net/'
   version '3.99.5'
   source_url 'https://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz'
   source_sha1 '03a0bfa85713adcc6b3383c12e2cc68a9cfbf4c4'

packages/libogg.rb

 require 'package'
 
 class Libogg < Package
+  description 'Ogg is a multimedia container format, and the native file and stream format for the Xiph.org multimedia codecs.'
+  homepage 'https://xiph.org/ogg/'
   version '1.3.1'
   source_url 'http://downloads.xiph.org/releases/ogg/libogg-1.3.1.tar.xz'
   source_sha1 'a4242415a7a9fd71f3092af9ff0b9fa630e4d7bd'

packages/libopencoreamr.rb

 require 'package'
 
 class Libopencoreamr < Package
+  description 'Audio codecs extracted from Android Open Source Project.'
+  homepage 'https://sourceforge.net/projects/opencore-amr/'
   version '0.1.5'
   source_url 'https://downloads.sourceforge.net/project/opencore-amr/opencore-amr/opencore-amr-0.1.5.tar.gz'
   source_sha1 'bef4d1e3a8a155b47569b6691a223843b33e279e'

packages/libopus.rb

 require 'package'
 
 class Libopus < Package
+  description 'Opus is a totally open, royalty-free, highly versatile audio codec.'
+  homepage 'http://opus-codec.org/'
   version '1.1.5'
   source_url 'https://archive.mozilla.org/pub/opus/opus-1.1.5.tar.gz'
   source_sha1 'fb6d55cf73059bd916790960c2eeffe83edabafe'

packages/libsdl.rb

 require 'package'
 
 class Libsdl < Package
+  description 'Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D.'
+  homepage 'http://www.libsdl.org/'
   version '1.2.15'
   source_url 'http://www.libsdl.org/release/SDL-1.2.15.tar.gz'
   source_sha1 '0c5f193ced810b0d7ce3ab06d808cbb5eef03a2c'

packages/libsoxr.rb

 require 'package'
 
 class Libsoxr < Package
+  description 'High quality, one-dimensional sample-rate conversion library.'
+  homepage 'https://sourceforge.net/projects/soxr/'
   version '0.1.2'
   source_url 'https://sourceforge.net/projects/soxr/files/soxr-0.1.2-Source.tar.xz'
   source_sha1 '3b990f91dc8dc08e70626cd5fb90deda0239c211'

packages/libtheora.rb

 require 'package'
 
 class Libtheora < Package
+  description 'Theora is a free and open video compression format from the Xiph.org Foundation.'
+  homepage 'https://theora.org/'
   version '1.1.1'
   source_url 'http://downloads.xiph.org/releases/theora/libtheora-1.1.1.tar.bz2'
   source_sha1 '8dcaa8e61cd86eb1244467c0b64b9ddac04ae262'

packages/libvoamrwbenc.rb

 require 'package'
 
 class Libvoamrwbenc < Package
+  description 'Audio codecs extracted from Android Open Source Project.'
+  homepage 'https://sourceforge.net/projects/opencore-amr/'
   version '0.1.3'
   source_url 'https://downloads.sourceforge.net/project/opencore-amr/vo-amrwbenc/vo-amrwbenc-0.1.3.tar.gz'
   source_sha1 '427a147a378d258614d5d470f1f222e249535be7'

packages/libvorbis.rb

 require 'package'
 
 class Libvorbis < Package
+  description 'Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free, general-purpose compressed audio format.'
+  homepage 'https://xiph.org/vorbis/'
   version '1.3.3'
   source_url 'http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.3.tar.xz'
   source_sha1 '31d1a0ec4815bf1ee638b0f2850f03efcd48022a'

packages/libwebp.rb

 require 'package'
 
 class Libwebp < Package
+  description 'WebP is a modern image format that provides superior lossless and lossy compression for images on the web.'
+  homepage 'https://developers.google.com/speed/webp/'
   version '0.6.0'
   source_url 'https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-0.6.0.tar.gz'
   source_sha1 '156d24fff454bfccd1f44434e226a10d9eb38186'

packages/libx264.rb

 require 'package'
 
 class Libx264 < Package
+  description 'x264 is a free software library and application for encoding video streams into the H.264/MPEG-4 AVC compression format.'
+  homepage 'http://www.videolan.org/developers/x264.html'
   version '20170604-2245-stable'
   source_url 'http://ftp.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-20170604-2245-stable.tar.bz2'
   source_sha1 '8003044b45010b1b4b40ac3dd8be98d80c888ece'

packages/libx265.rb

 require 'package'
 
 class Libx265 < Package
+  description 'x265 is a H.265 / HEVC video encoder application library.'
+  homepage 'http://x265.org/'
   version '2.4'
   source_url 'https://bitbucket.org/multicoreware/x265/downloads/x265_2.4.tar.gz'
   source_sha1 'f8bfb348defa86fbfdce4dcc1d0c48c855e0e987'

packages/libxvid.rb

 require 'package'
 
 class Libxvid < Package
+  description 'The free video codec that is strong in compression and quality.'
+  homepage 'https://www.xvid.com/'
   version '1.3.4'
   source_url 'http://downloads.xvid.org/downloads/xvidcore-1.3.4.tar.gz'
   source_sha1 'd8f58e35ec325ebd7de9a28440b725a40ea49dae'

packages/openjpeg.rb

 require 'package'
 
 class Openjpeg < Package
+  description 'OpenJPEG is an open-source JPEG 2000 codec written in C language.'
+  homepage 'https://github.com/uclouvain/openjpeg/'
   version '2.1.2'
   source_url 'https://github.com/uclouvain/openjpeg/archive/v2.1.2.tar.gz'
   source_sha1 'c8671e7f577fdc58abde1e1f32b10d372e6f9b07'

packages/rtmpdump.rb

 require 'package'
 
 class Rtmpdump < Package
+  description 'rtmpdump is a toolkit for RTMP streams.'
+  homepage 'https://rtmpdump.mplayerhq.hu/'
   version 'fa8646d'
   source_url 'https://git.ffmpeg.org/gitweb/rtmpdump.git/snapshot/fa8646daeb19dfd12c181f7d19de708d623704c0.tar.gz'
   source_sha1 '2faefe655b72f91540f39eebc3020f1c9dcc654e'

packages/speex.rb

 require 'package'
 
 class Speex < Package
+  description 'Speex is an Open Source/Free Software patent-free audio compression format designed for speech.'
+  homepage 'https://speex.org/'
   version '1.2.0'
   source_url 'http://downloads.us.xiph.org/releases/speex/speex-1.2.0.tar.gz'
   source_sha1 '18ebc3fa3236b4369509e9439acc32d0e864fa7f'

packages/vidstab.rb

 require 'package'
 
 class Vidstab < Package
+  description 'Transcode video stabilization plugin.'
+  homepage 'http://public.hronopik.de/vid.stab/'
   version '0.98b'
   source_url 'https://github.com/georgmartius/vid.stab/archive/release-0.98b.tar.gz'
   source_sha1 '1030a1baa9b2cba844758a6cd8dd5d5fc23f9cd9'