Update README.md
Add analytics script (the basic non-angular way)
Bootstrap theme roller
Add meta description and author
Do not request theme if not needed
Make message box constant height
Fix typo
Introduce ui-router. Add Homepage.

Define two application states: main (homepage) and game edit.
Homepage allow to create a new game and redirect to the edit game page.
Game name appears in the url.
Review rulebook navigation to work with ui-router.