Fixing bug in gemspec file
Disabling autofocus in Dropdown (until a better solution can be developed)
Upping version number to 0.0.12
Removing the need for the async library.

Some of the tests for tab animation will need to be refactored since
they cannot spy on async.parallel anymore (possibly extract the
animation code into a separate "_doAnimation" method without the logic
to check if it is a valid animation)
Merge pull request #49 from javallone/remove_async

Removing the need for the async library.
Fixing an issue that prevented gem from installing on Unix machines
Merge branch 'master' into gem_refactor

Conflicts:
	spec/addons/tab_animation.spec.js