Drone.io content_shell installation

content_shell_install.sh

#!/bin/bash

# Install Dartium content_shell
$DART_SDK/../chromium/download_contentshell.sh
unzip content_shell-linux-x64-release.zip
mkdir content_shell
mv drt*/* ./content_shell

# Define html_test alias to run tests as dart w/ content_shell
html_test(){
	./content_shell/content_shell --dump-render-tree $* 
}

# Start virtual frame buffer
sudo start xvfb