Add a .gitignore file. This prevents .pyc files from appearing in "repo status". BUG=None TEST=git status Change-Id: Idc3c6b0a02f28b926a056f09e3f57217e57472b0 Reviewed-on: https://chromium-review.googlesource.com/191128 Reviewed-by: Mike Frysinger <[email protected]> Commit-Queue: Don Garrett <[email protected]> Tested-by: Don Garrett <[email protected]>