Upgraded to Ejecta 1.2

- Upgraded to Ejecta 1.2 (SHA d991c7d9f2546ee3c874c7a69f74d6f3f40ded8e)
updated custom view for postMessage receive object spec
updated custom view for postMessage receive object spec
removed JSON sringify - wizViewMessenger is doing now
updated custom view for postMessage receive object spec
fully resolved postMessage to wizViewMessenger
Update README.md
Update README.md
Added support for loading from a URL for canvas view type.
Minor refactor of canvas loading code.

- Moved common loading code into one method.
- Modified loadRequest to return a boolean indicating success or failure.
Minor bug fixes and author listing update.
Merge pull request #19 from wcwynn/v2.3

Apply missing commits from 1.9 branch to 2.3
Updated the plugin and example to Cordova 2.4.
Updated the plugin and example to Cordova 2.5.
Updated the plugin and example to Cordova 2.6.
Updated the plugin and example to Cordova 2.7.
Merge pull request #21 from wcwynn/v2.7

Update to version 2.7