Adds the correct activity category for Tumblr.
Make `+[TMAPIClient sharedInstance]` instancetype
Merge pull request #55 from segiddins/shared-instance-instancetype

Make `+[TMAPIClient sharedInstance]` instancetype
Fixed TMOAuth crash on iOS 6 and earlier. Fixes tumblr/TMTumblrSDK#56

iOS 7 introduced a new API for base64-encoding, -[NSData base64EncodedStringWithOptions:]. This
API was not available in iOS 6 and earlier, but another API, -[NSData base64Encoding], was. It
was deprecated in iOS 7. So this commit changes TMOAuth to use the new API if available, and
fallback to the deprecated API if it is not available.
Merge pull request #57 from stevestreza/master

Fixed TMOAuth crash on iOS 6 and earlier. Fixes tumblr/TMTumblrSDK#56
Merge pull request #46 from tumblr/activity-category

Adds the correct activity category for Tumblr.
Bump podspec version number
Add a changelog
Document our custom UTI
Add workaround for missing cocoapods on travis vm
Update xcodebuild command to run unit test on xcode 5
Merge pull request #58 from honishi/fix-ci

Update build settings for Travis CI