Updated ZF2 to v2.2.2, updated Composer files.
Markdown fixes for Sass README.
Replaced minified vendor files with dev versions.

JS vendor files (as of now):

  - jQuery (v1.10.2)
  - HideShowPassword jQuery plugin
  - Modernizr

The 'js' Grunt task will generate a custom Modernizr build (vendor/modernizr.custom.js),
concat the JS files, and run the result through UglifyJS.
Store phone numbers as integers.
Added module-level README file.
Added the list of project contributors to the About page.