Add ansifilter package

packages/ansifilter.rb

+require 'package'
+
+class Ansifilter < Package
+  description 'Ansifilter parses common ANSI codes to remove them or to convert them to another colored text file format (HTML, TeX, LaTeX, RTF, Pango or BBCode).'
+  homepage 'http://www.andre-simon.de/doku/ansifilter/en/ansifilter.php'
+  version '2.10'
+  source_url 'http://www.andre-simon.de/zip/ansifilter-2.10.tar.bz2'
+  source_sha256 '23d2cf439d4ed4fbec8050b2826d61c244694ce06aaf8ca7d0ec1016afebee3f'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  def self.build
+    system 'mv makefile Makefile'
+    system "sed -i 's,DESTDIR = ,DESTDIR = #{CREW_DEST_DIR},' Makefile"
+    system "sed -i 's,PREFIX = /usr,PREFIX = #{CREW_PREFIX},' Makefile"
+    system 'make'
+  end
+
+  def self.install
+    system 'make install'
+  end
+end