Configs and scripts for development.

Checked on Ubuntu 16.04.

1. vim: ./install_vim.sh

2. tmux: cp tmux.conf .tmux.conf

3. git: cp gitconfig .gitconfig

4. zsh: ./install_zsh.sh

Use macvim in Macos

brew unlink vim
brew install macvim
brew link vim

# add alias in bash_profile
alias vim=mvim