Merge pull request #1 from Whizy/master

Eleven HTTP API
Merge pull request #2 from Whizy/master

Pull #1 (Implement client.error and client.attachErrorImage. Use modules jshint and require-dir)
add simple deployment script

A simple bash script deployment system, intended to be run from a
Jenkins job. Also includes a sample systemd unit config file.
Merge pull request #3 from yelworc/deployment

add simple deployment script