Version bump to v2.1.5

Author: sethvargo

metadata.rb

@@ -4,7 +4,7 @@
 license          "Apache 2.0"
 description      "Deploys and configures Ruby-based applications"
 long_description  IO.read(File.join(File.dirname(__FILE__), 'README.md'))
-version          "2.1.4"
+version          "2.1.5"
 
 %w{ unicorn apache2 passenger_apache2 }.each do |cb|
   depends cb