vim添加python3支持_neovim 增加python3.5的支持

由于spacevim对neovim支持更好，对vim似乎有很多bug，所以尝试使用一下nvim

nvim的安装很简单，但是装完之后，启动了ycm总是报错

YouCompleteMe unavailable: unable to load Python

怀疑是nvim安装的时候没有增加python支持的原因，遂在nvim中使用 :checkhealth,然后发现果然没有

## Python 3 provider (optional) 38 - INFO: Disabled (g:loaded_python3_provider=1). This might be due to some previous error.

39 - INFO: Using: g:python3_host_prog = "/usr/bin/python3"

40 - INFO: Executable: /usr/bin/python3

41 - ERROR: Command error (job=5): `'/usr/bin/python3' -c 'import sys; sys.path.remove(""); import neovim; print(neovim.__file__)'` (in '/root/.SpaceVim.d/

autoload')

42 Output: Traceback (most recent call last): File "", line 1, in ImportError: No module named 'neovim'

43 - INFO: Python3 version: 3.5.2

44 - INFO: python3-neovim version: unable to load neovim Python module

45 - ERROR: Neovim Python client is not installed.

46 Error: unable to load neovim Python module

47 - ADVICE:

48 ┊ - Run in shell: pip3 install neovimm

解决的方式，需要安装python包

pip3 install --user --upgrade pynvim