Unify style of subcommand docstrings in git-cl

git_cl.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld."""
 
 from distutils.version import LooseVersion
@@ skipping 2879 matching lines @@
   if args:
     parser.error('Unrecognized args: %s' % ' '.join(args))
   cl = Changelist()
   # Ensure there actually is an issue to close.
   cl.GetDescription()
   cl.CloseIssue()
   return 0
 
 
 def CMDdiff(parser, args):
-  """shows differences between local tree and last upload."""
+  """Shows differences between local tree and last upload."""
   parser.parse_args(args)
   cl = Changelist()
   issue = cl.GetIssue()
   branch = cl.GetBranch()
   if not issue:
     DieWithError('No issue found for current branch (%s)' % branch)
   TMP_BRANCH = 'git-cl-diff'
   base_branch = cl.GetCommonAncestorWithUpstream()
 
   # Create a new branch based on the merge-base
   RunGit(['checkout', '-q', '-b', TMP_BRANCH, base_branch])
   try:
     # Patch in the latest changes from rietveld.
     rtn = PatchIssue(issue, False, False, None)
     if rtn != 0:
       return rtn
 
     # Switch back to starting branch and diff against the temporary
     # branch containing the latest rietveld patch.
     subprocess2.check_call(['git', 'diff', TMP_BRANCH, branch, '--'])
   finally:
     RunGit(['checkout', '-q', branch])
     RunGit(['branch', '-D', TMP_BRANCH])
 
   return 0
 
 
 def CMDowners(parser, args):
-  """interactively find the owners for reviewing"""
+  """Interactively find the owners for reviewing."""
   parser.add_option(
       '--no-color',
       action='store_true',
       help='Use this option to disable color output')
   options, args = parser.parse_args(args)
 
   author = RunGit(['config', 'user.email']).strip() or None
 
   cl = Changelist()
 
@@ skipping 196 matching lines @@
 if __name__ == '__main__':
   # These affect sys.stdout so do it outside of main() to simplify mocks in
   # unit testing.
   fix_encoding.fix_encoding()
   colorama.init()
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)