Add reloading browser for development
Created by: mmarciel
Improve build process of grunt for developers to make a change in the source code and automatically load the browser.
I add a web server to serve statics and Browsersync to reload the browser. The server includes a middleware to add the code necessary for Browsersync in html files.
To launch the live reloading of the browser, execute 'grunt dev'. To launch only a web server, execute 'grunt serve'.