Integrated doc-code-verify
Added some documentation for doc-code-verify
Merge branch 'master' into jjinux

Conflicts:
	runtests.sh
Integrated doc-code-merge
Tweaked the code samples for doc-code-verify and prettify dart
Improved the docs for doc-code-verify
Merge pull request #54 from dart-lang/jjinux

Did the initial integration with doc-code-verify