Basic SEO fixes for Angular, based on the Brian Ford's generator

- connect-modrewrite is correctly set to v0.2.3
- Gruntfile.js: uses modrewrite to support livereload with html5 mode
enabled
- Grunfile.js: port changed to 9001
- added <title> and meta description+keywords that are going to use the
SEO service (still not implemented in the generator)
- possibility to choose between Twitter Bootrstrap or Zurb Foundation