Replaced share with Singleton

Merge pull request #1 from GeorgeHanson/master

Replaced share method with singleton method

Updated JavaScript class and added unit tests

• Updated the share method so it can be chained
• Added unit tests
• Added documentation to the readme

Updated the service provider

0.1.1

Updated the service provider to be deferred

Pre-release version so that we can all stop referencing dev-master

0.1

Update the readme