Install Travis gem.
Add Heroku Procfile for statik web server.
Add Heroku deployment for Travis.
Bind to the PORT environment variable.
Add repository URL.
Fix server.js path.
Fix statik version.
Fix server.js path.
Fix server.js path.
Move devDependencies to dependencies.
Use scripts.start instead of Procfile.
Add scripts.postinstall for Heroku to run during deployment.
Use Express instead of Statik.
Add bundle install to the postinstall step of npm.
Specify ruby version in Gemfile.
Use multiple buildpacks for Ruby and NodeJS development.
Courtesy https://github.com/ddollar/heroku-buildpack-multi
Set Ruby as the first buildpack.
Upgrade to Ruby 2.2.0.
Use local gulp from node_modules/.bin/gulp.
Remove bundle install from Node's postinstall step as we're using the Ruby buildpack.