Add |git cl description| to allow you to change the description in your favorite $EDITOR.
Add |git cl description| to allow you to change the description in your favorite $EDITOR.

R=maruel@chromium.org

Review URL: https://codereview.chromium.org/15302014

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@201094 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools