Add link to Xitrum
Merge pull request #115 from ngocdaothanh/master

Add link to Xitrum
README cleanup from @devinrhode2
Specify firefox version for quirk. From @maritz
Fix message transmission when the message is sent from an iframe/popup in IE7/8
Merge pull request #166 from yannickcr/fix-popup-ie

Fix iframe fallback when the message is sent from a popup in IE
Add empty travis file
Specify master branch for travis CI
Add Content-Type request header for xhr send
Merge pull request #164 from georgeOsdDev/master

Galaxy S4 cannot post cross domain message over HTTPS with XHR protocol
Update license info
fix license reference
Tests can now run independently.

Using zuul for automated browser testing.
Fix travis.yml
Do chrome latest tests until I'm sure they are working
Fix makefile
Fixes #143 by checking for empty response

Also try/catch JSON.parse for an error.
Fixes #65. Rename protocol to transport
Allow use of deprecated protocols_whitelist option