Output the URL in the cURL debug string as the value of the optional, not the optional itself
Update README.md
Merge pull request #66 from rkeniger/rob/fix-curl-url

Fix the URL written to the cURL debug string
Xcode 6 beta 7 fixes (source + iOS Example)
Merge pull request #78 from JJSaccolo/master

Xcode 6 beta 7 fixes (source + iOS Example)
Add support for progress callbacks of data requests.