Standardize RichTextCodeMirrorAdapter's addStyleRule

Also:
  * delete confusing codemirror-adapter.js file.
  * export RichTextCodeMirrorAdapter's and AceAdapter
Merge pull request #100 from vincentwoo/master

Standardize RichTextCodeMirrorAdapter's addStyleRule
Fixes #101: Wrap key handlers in a setTimeout() to escape being wrapped in an undesired cm.operation().
Fixes #99: Issues with ace-adapter newline handling.
Fixes #95 (hopefully): Avoid setting font size to NaN on unexpected values.
Bump version to 0.1.4.