Merge pull request #1423 from uberhacker/add-chruby-package

Add chruby package

packages/chruby.rb

+require 'package'
+
+class Chruby < Package
+  description 'Changes the current Ruby'
+  homepage 'https://github.com/postmodern/chruby'
+  version '0.3.9'
+  source_url 'https://github.com/postmodern/chruby/archive/v0.3.9.tar.gz'
+  source_sha256 '7220a96e355b8a613929881c091ca85ec809153988d7d691299e0a16806b42fd'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  def self.build
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+
+  def self.postinstall
+    puts
+    puts "To finish the installation, execute the following:".lightblue
+    puts "echo 'if [ -f #{CREW_PREFIX}/share/chruby/chruby.sh ]; then' >> ~/.bashrc".lightblue
+    puts "echo '  source #{CREW_PREFIX}/share/chruby/chruby.sh' >> ~/.bashrc".lightblue
+    puts "echo 'fi' >> ~/.bashrc".lightblue
+    puts "source ~/.bashrc".lightblue
+    puts
+  end
+end