Merge pull request #501 from rubymotion-community/readme-update

Small update to the readme

README.md

@@ -23,7 +23,7 @@ require 'bubble-wrap'
 If you use Bundler:
 
 ```ruby
-gem 'bubble-wrap', '~> 1.9.6'
+gem 'bubble-wrap', '~> 1.9.7'
 ```
 
 BubbleWrap is split into multiple modules so that you can easily choose which parts are included at compile-time.