Add keymap for Windows

Signed-off-by: chaoming.edc <blastmann@live.com>
Merge branch 'release/1.2.4'

* release/1.2.4:
  package metadata update
Merge pull request #64 from blastmann/master

Add keymap for Windows.
Fixes for some Sublime 3 errors
Merge branch 'develop' of github.com:ttscoff/MarkdownEditing into develop

* 'develop' of github.com:ttscoff/MarkdownEditing:
  Fixes for some Sublime 3 errors