typo
Merge pull request #142 from guillermooo/patch-1

typo
Update py-gfm.
Merge pull request #143 from dart-lang/update-gfm

Update py-gfm.
Remove docs and point to ones on dartlang.org.

R=nweiz@google.com

Review URL: https://chromiumcodereview.appspot.com//162403002
Make doc URLs redirect to their new home.

R=nweiz@google.com

Review URL: https://chromiumcodereview.appspot.com//166163006
Display dev version constraints based on current Dart team policies.

R=rnystrom@google.com

Review URL: https://chromiumcodereview.appspot.com//173333003
Merge pull request #1 from dart-lang/master

update