0.2 release for Pikabu

This is a bugfix release. Fixes include:

- Fix for options object specified during init overwriting the defaults object (even for un-supplied options)
- Android 2.3 bugfix in setViewportWidth
- Fixed a bug where the right sidebar didn't have an animation when closing

Other changes that're included:
- BEM naming used for CSS
- Added generated test CSS file to gitignore (since the test has an scss file too)