Adding additional headers for CORS support
refreshSession sometimes doesn't call any callback

In phonegap (android) in some cases teh hasRefreshToken returns false,
and then no Cb are executed breaking the flow of the app.

plus a minor fix :)
Updating CORS headers
Merge pull request #20 from ilbambino/master

refreshSession sometimes doesn't call any callback
Merge pull request #21 from stackmob/f/cors

Adding additional headers for CORS support
Bug fixes for authentication callbacks
Default API URL to api.stackmob.com
Update logged out spec
Merge pull request #22 from stackmob/b/callbacks

Bug fixes for authentication callbacks
Merge pull request #24 from stackmob/f/default-api-server

Default API URL to api.stackmob.com
Rename useProxy to useRelativePathForAjax and make it true for specs
Merge pull request #25 from stackmob/f/default-api-server

Rename useProxy to useRelativePathForAjax and make it true for specs
Fix custom code api url
Update change log for 0.8.0 release
Merge pull request #23 from stackmob/0.8.0-wip

JS SDK 0.8.0