chore(subtree): merge tomchentw/tc-spa-boilerplate@be7bbfc6df

* make views static in client and express server is just api

Conflicts:
    .gitignore
    .travis.yml
    Makefile
    README.md
    bower.json
    client/gulpfile.ls
    client/javascripts/application.ls
    client/stylesheets/_bootstrap.scss
    client/stylesheets/application.scss
    index.ls
    package.json
    server/index.ls