Merge pull request #129 from vladson/jruby_support

Add support for JRuby

Author: julienXX

Diff for: Ruby/lib/terminal-notifier.rb

@@ -1,12 +1,13 @@
 require 'shellwords'
+require 'rbconfig'
 
 module TerminalNotifier
   BIN_PATH = File.expand_path('../../vendor/terminal-notifier/terminal-notifier.app/Contents/MacOS/terminal-notifier', __FILE__)
 
   class UnsupportedPlatformError < StandardError; end
   # Returns wether or not the current platform is Mac OS X 10.8, or higher.
   def self.available?
-    @available ||= (/darwin/ =~ RUBY_PLATFORM) && Gem::Version.new(version) > Gem::Version.new('10.8')
+    @available ||= (/darwin|mac os/ =~ RbConfig::CONFIG['host_os']) && Gem::Version.new(version) > Gem::Version.new('10.8')
   end
 
   def self.version