Add submodule vim/vendor/UltiSnips @6ad9a39

* vim/vendor/UltiSnips 0000000...6ad9a39 (609):
  > Merge pull request #108 from memand/master
Switch to MarcWeber's UltiSnips fork
Add submodule vim/bundle/gf-python @4b995e1

* vim/bundle/gf-python 0000000...4b995e1 (7):
  > Improving logic for find on sys.path
Update submodule oh-my-zsh 5e1e659...15e6906

* oh-my-zsh 5e1e659...15e6906 (7):
  > Do not alias "ag" (=> The Silver Searcher)
  > xrgrep: add --debug option, extend excludes
  > Do not set autonamedirs
  > zstyle: vcs_info adjustments (moved from theme)
  > Git plugin: new alias/functions
  > theme: fancy prompt sign [1], user@host with SSH only
  > theme: enhance colored segments (slash)