vim prepare steps with vundle and you complete me

vim-prepare.sh

#!/bin/bash

on_darwin=$(uname -s | grep -i darwin | wc -l)
test_brew_exists=$(which brew | wc -l)
if [[ "${test_brew_exists}" != "0" ]]; then
    brew install cmake
fi

mkdir ~/.vim
git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
git clone https://github.com/Valloric/YouCompleteMe.git ~/.vim/bundle/YouCompleteMe
cd ~/.vim/bundle/YouCompleteMe
git submodule update --init --recursive
./install.py --clang-completer

echo ''
echo 'install vim plugins by opening a file and running the command:'
echo 'vim somefile'
echo ':PluginInstall'
echo ''

on_darwin=$(uname -s | grep -i darwin | wc -l)
if [[ "${on_darwin}" != "0" ]]; then
    echo 'install vim and vundle:'
    echo 'PYCURL_SSL_LIBRARY=openssl LDFLAGS="-L/usr/local/opt/openssl/lib" CPPFLAGS="-I/usr/local/opt/openssl/include" pip install --no-cache-dir pycurl'
    echo ''
fi