Merge pull request #3 from adoel/master

component header
[README] basic documentation about how to using xin-archetype
[.gitignore] exclude dir: www/vedor/*
[Modified] change path bower_components to vendor at index.html file
[MODIFIED] readme.md file, installtion step with bower install and Cordova plugins list
[js] add user.js file
[MODIFIED] remove double line
[MODIFIED] sign up page form
[DELETE] fontawesome from depedencies