Start a smiley keyboard view.

Well this was quite a journey:

* Updated CocoaPods to 0.34.
* Found a smarter workaround for the bridging header compile error when linking against SmileyFramework in other targets. Instead of adding the HTMLReader pod, we can add the pods public header folder to the "Header Search Paths" build setting. The relevant targets are SmileyExtractor, SmileyKeyboard, and SmileyTests; each of which has its header search paths set and is now untangled from CocoaPods.
* Fixed post-pod-install acknowledgements copying.
* Moved the AWFUL_BUNDLE_ID_SUFFIX build setting up to the project level so that the keyboard can access it. The keyboard's bundle ID must be prefixed by its app's bundle ID, which is partially determined by that setting.