Merge pull request #9 from arobson/master

Bug fix for #8 - relative root URLs shouldn't throw an exception.
Add support for query parameters.
Remove '?' key from data before passing to adapter
Add support for file uploads when using the requestAdapter
Merge pull request #10 from arobson/parameters

Add support for query parameters.
Update changelog
Add support for detection and handling of connectivity issues
Correct spelling errors. :no_mouth:
Bug fix for #13 - race condition on file upload/form post
Change upload approach to something that should work consistently - re: #14