Update README.md

README.md

@@ -15,3 +15,23 @@ or [Vundle](https://github.com/VundleVim/Vundle.vim)
 ```
 git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
 ```
+For YCM:
+```
+brew install macvim # optional 
+brew install cmake python go nodejs
+cd ~/.vim/bundle/YouCompleteMe
+python3 install.py --clang-interpreter # no need --all
+```
+Add to `.vimrc` (may need to `brew install vim` for python3+ support)
+```
+" YouCompleteMe
+let g:ycm_global_ycm_extra_conf='~/.vim/bundle/YouCompleteMe/.ycm_extra_conf.py'
+let g:ycm_confirm_extra_conf=0
+let g:ycm_python_binary_path='/usr/bin/python3'
+```
+Then `:wq` to exit, reopen vim and run:
+- Delete plugin: `:PluginUpdate`
+- Add plugin: `:PluginInstall`
+
+## References
+[vundle](https://www.jianshu.com/p/f0513d18742a)