Update README.md for CocoaPods
Merge pull request #64 from tualatrix/master

CocoaPods' dependency is deprecated
Supports adding parts with NSNumber.
Merge pull request #68 from hwaxxer/number-support

Supports adding parts with NSNumber.
Merge branch 'release/1.2.3'
Merge branch 'release/1.2.3'
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.
Fixed Crash when the scope string is NSNull
some none ARC compatible code was left in the debug part
added an addAcccount method
added some helper methods when we have a token but not client
v1.2.5
Adding the ability to configure the token request HTTP Method, e.g. for LinkedIn who wants all request params in the query string (and accepts GET requests).
Support redirect URLs without a scheme specified, such as redirect URLs used by Google APIs
Fixed assertion issue when refresh_token is not used and access_token is expired.
Removed unnecessary semicolon ; character.
remove unnecessary yoda-style nil inequality check