Code gardening: consistent indentation, even for preprocessor code.
Defining CocoaLumberjack's `LOG_LEVEL_DEF` to custom `flAnimatedImageLogLevel` to avoid `ddLogLevel` re-definition (or lack of definition) issues.

See: https://github.com/Flipboard/FLAnimatedImage/issues/50
Decorate the designated initializer for semantic compiler warnings with NS_DESIGNATED_INITIALIZER.
Add convenience initializer `+animatedImageWithGIFData:`.
Use convenience initializer in demo project.
Update README to use convenience initializer in example.
Delete unneeded #import in demo project.
Update CHANGES for 1.0.4
Update Podfile for 1.0.4