fewer prefixes

-moz- & -o- have been dropped for a while:
http://caniuse.com/transforms2d
http://caniuse.com/css-transitions
+ top comment

Helpful for many JS minifiers to keep ID, version, author, & copyright/licence
v0.0.3
v0.0.3
Merge pull request #22 from tomByrer/patch-1

remove `-moz-` & `-o-` from css transitions and transforms, and update comments section