Bump version to 2.2.0 for PACTCH method support

CHANGELOG

@@ -1,7 +1,8 @@
 Features under the section marked 'Current' are completed but pending release as a gem. If you need any of these, you'll need to use the latest source from the git repository.
 
 Features under a numbered section are complete and available in the Wrest gem.
-== DEV
+
+== 2.2.0
  * Add support for HTTP PATCH [Aditi Raveesh]
 
 == 2.1.9

README.md

@@ -1,14 +1,14 @@
 [![Build Status](https://travis-ci.org/c42/wrest.svg?branch=master)](https://travis-ci.org/c42/wrest)
 
-# Wrest 2.1.9
+# Wrest 2.2.0
 
 (c) Copyright 2009-2016 [Sidu Ponnappa](http://twitter.com/ponnappa). All Rights Reserved.
 
 Wrest is a ruby REST/HTTP client library. It is currently in use at substantial scale across all Ruby/JRuby systems at [GO-JEK](https://twitter.com/GojekTech).
 
-* Allows you to pick your Ruby: use 2.x.x, JRuby 9.x.x
+* Allows you to pick your Ruby: use CRuby or JRuby
 * Supports RFC 2616 based [caching](https://github.com/kaiwren/wrest/blob/caching/Caching.markdown)
-* Async http calls using Threads (reliable only on JRuby) or EventMachine
+* Async http calls using Threads (truly useful only on JRuby due to [GIL](https://en.wikipedia.org/wiki/Global_interpreter_lock) limitations on CRuby) or EventMachine
 * Allows you to quickly build object oriented wrappers around any web service
 * Is designed to be used as a library, not just a command line REST client (fewer class/static methods, more object oriented)
 * Is spec driven, strongly favours immutable objects and avoids class methods and setters making it better suited for use as a library, especially in multi-threaded environments

lib/wrest/version.rb

@@ -8,5 +8,5 @@
 # See the License for the specific language governing permissions and limitations under the License.
 
 module Wrest
-  VERSION = "2.1.9"
+  VERSION = "2.2.0"
 end