sdk/ruby: tick version to 1.0.3

Closes #666

Author: jeffomatic

sdk/ruby/CHANGELOG.md

@@ -1,5 +1,9 @@
 # Chain Ruby SDK
 
+## 1.0.3 (March 2, 2017)
+
+* Relax minimum Ruby version requirement from 2.1 to 2.0. While the Ruby SDK is now compatible with Ruby 2.0, we strongly recommend using Ruby 2.1 or greater, since Ruby 2.0 has reached end-of-life and is no longer receiving critical security updates.
+
 ## 1.0.2 (February 21, 2017)
 
 * Syntax compatibility update

sdk/ruby/README.md

@@ -11,7 +11,7 @@ Ruby 2.0 or greater is required. We strongly recommend upgrading to Ruby 2.1 or
 For most applications, you can simply add the following to your `Gemfile`:
 
 ```
-gem 'chain-sdk', '~> 1.0.2', require: 'chain'
+gem 'chain-sdk', '~> 1.0.3', require: 'chain'
 ```
 
 ### In your code

sdk/ruby/lib/chain/version.rb

@@ -1,3 +1,3 @@
 module Chain
-  VERSION = '1.0.2'
+  VERSION = '1.0.3'
 end