Merge pull request #1361 from uberhacker/add-cmus-package

Add cmus package

packages/cmus.rb

+require 'package'
+
+class Cmus < Package
+  description 'cmus is a small, fast and powerful console music player for Unix-like operating systems.'
+  homepage 'https://cmus.github.io/'
+  version '2.7.1'
+  source_url 'https://github.com/cmus/cmus/archive/v2.7.1.tar.gz'
+  source_sha256 '8179a7a843d257ddb585f4c65599844bc0e516fe85e97f6f87a7ceade4eb5165'
+
+  depends_on 'ffmpeg'
+
+  def self.build
+    system "sed -i 's,/usr/include,#{CREW_PREFIX}/include,g' configure"
+    system "./configure prefix=#{CREW_PREFIX} libdir=#{CREW_LIB_PREFIX}"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end