fix pip need sudo

Author: TTWShell

install-plugins.sh

@@ -17,7 +17,7 @@ function init {
  curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
  https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
 
- pip install flake8 # for vim-flake8
+ sudo pip install flake8 # for vim-flake8
 
  install