Set up new droplet

setup.sh

# create rootless, set up sudo user
# https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu-14-04

sudo apt-get update
sudo apt-get install git
sudo apt-get install ruby
# install linux homebrew
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/linuxbrew/go/install)"
# vim ~/.bashrc
export PATH="$HOME/.linuxbrew/bin:$PATH"
export MANPATH="$HOME/.linuxbrew/share/man:$MANPATH"
export INFOPATH="$HOME/.linuxbrew/share/info:$INFOPATH"

sudo apt-get install htop
sudo apt-get install build-essential

# R language
sudo sh -c 'echo "deb http://cran.rstudio.com/bin/linux/ubuntu trusty/" >> /etc/apt/sources.list'
gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9
gpg -a --export E084DAB9 | sudo apt-key add -
sudo apt-get update
sudo apt-get -y install r-base
sudo apt-get install r-base-dev

# spacemacs
brew install emacs
git clone https://github.com/syl20bnr/spacemacs ~/.emacs.d
# copy https://gist.github.com/Puriney/5623401f6d7e220f66279c3edcd02e05 to ~/.spacemacs