Remove box-shadows

Extra styles make this really hard to work with since you have to negate
the current style before you add your own.
Fix transparency issue in sprite
Merge branch 'hotfix-0.1.1'
Merge branch 'remove-shadows' into develop
Move .contract class from html to js

This is an initialization issue and makes for awkward html structure since
you have to remember the precise details otherwise everything breaks.
Use classes instead of ids

We don't want to impose our names on other projects. Doesn't make much
sense to have a library take away such a rare position.
Merge branch 'switch-ids-to-classes' into develop
Use updated transparent sprite
Merge branch 'release-0.2'
Merge branch 'master' of https://github.com/sethbonnie/Bulgakov