Add support for 'Accept' request header
Test support for 'Accept' request header
Update Readme.md with 'accept' opt and fixed value for 'throttle' default value
Fixed typo in Readme.md
Add support for setting multiple request headers
Update Readme.md for new headers support
Fix typo in Readme.md
Merge pull request #4 from gvilarino/master

Add support for specifying 'Accept' request parameter for AJAX calls