Add QueryString parameters to OAuth signature
Add integration test for OAuth1 authentication against Twitter API
Removed CF support

SimpleJson removed support for CF, I've even checked and Json.Net doesn't support it either.
Merge branch 'master' of git://github.com/mganss/RestSharp into mganss-master
Ignored the Twitter test so the test suite passes
Merge branch 'mganss-master'
Merge branch 'master' of https://github.com/restsharp/RestSharp into 608_Encoding