Splitting up some of the wtf.data types to be easier to find.
Moving the Closure shim to shims/ and updating jsdocs.
'wtfapi' -> 'WTF', as it keeps the character count the same.
Adding a shim for non-Closure Javascript.
Fixes #286.
Merge pull request #287 from google/shims

Adding better docs to the shim file and adding a non-Closure JS shim file.