Fixed the case of some phpdoc annotations
Added support for Mailchimp API v2.0; Added HTTP POST method support for HTTP Adapters.
@TODO - Implement POST method in the socket HTTP Adapter
Updated tests to test HTTP POST method and getName of the HTTP Adapters
renamed src folder to lib
Changes to README and CHANGELOG
CS fixes
Dropped Socket HTTP Adapter
CS fix
Added more documentation and improved README; Added changes to CHANGELOG
Merge pull request #2 from danielcsgomes/feature/update-to-2.0

[Feature] Add support for Mailchimp API v2.0 and add HTTP POST method to HTTP Adapters