File uploads can have a custom content-type if created as stream parameter.
Added usecase for file upload.
Remove editor backup file.
Fixed compiler warning synthesized property.
Removed a couple of Xcode warnings related to implicitly using OSStatus in NSAssert, and building only for active architecture while in Debug mode.
Ensure that the cleanup method does not cause a crash due to accountType being nil.
As this should never be called anyway just be safe. Thanks to @mdamjanic7 for pointing out crashes caused by this.
Add option to define content type when uploading.

Thanks to @locandy for this feature.

Merge remote-tracking branch 'locandy/master' into develop

Conflicts:
	README.md
point to wiki examples in readme
Update README.md
Fixing a compiler missinterpretation of an id type

Closing #120
Adding custom header in order to provide a POST with a application/x-www-form-urlencoded MIME type.
Adding missing constants
Wiring up the custom http headers for all types of requests
Adding some documentation to the Custom Header Key
Merge pull request #1 from ghvillasboas/develop

Wiring up the custom http headers for all types of requests
Fixing complaints from @toto
Merge pull request #124 from AndreasTextunes/develop

Adding custom header in order to provide a POST with custom MIME types