background and other small stuff
precompile assets
Merge branch 'master' of github.com:WaleyChen/code-trial

Conflicts:
	public/assets/application-04a702eeb55075a1688ccb417d4f4722.css.gz
	public/assets/application-0984ac066ad2fb1cce553356ed201701.js.gz
	public/assets/application.css
	public/assets/application.css.gz
	public/assets/application.js.gz
	public/assets/manifest.yml