Merge branch 'hotfix/1.5.1'

* hotfix/1.5.1:
  Update RELEASE
  Remove all submodules then reset .vim submodule to cob's.
Merge branch 'release/1.6'

* release/1.6:
  Update RELEASE
  Add .tmux.conf
Update READEME
Update .vim submodule
Update .vim
Merge branch 'master' into develop

* master:
  Update .vim
  Update .vim submodule
  Update READEME