Merge pull request #859 from MD5HashBrowns/patch-1

Add masscan package

packages/masscan.rb

+require 'package'
+
+class Masscan < Package
+  description 'TCP port scanner, spews SYN packets asynchronously, scanning entire
+Internet in under 5 minutes.'
+  homepage 'https://github.com/robertdavidgraham/masscan'
+  version '1.0.4'
+  source_url 'https://github.com/robertdavidgraham/masscan/archive/1.0.4.tar.gz'
+  source_sha256 '51de345f677f46595fc3bd747bfb61bc9ff130adcbec48f3401f8057c8702af9'
+
+  depends_on 'libpcap'
+
+  def self.build
+    system "make"
+  end
+
+  def self.install
+    system "mkdir -p #{CREW_DEST_DIR}/usr/local/bin"
+    system "cp bin/masscan #{CREW_DEST_DIR}/usr/local/bin"
+  end
+end