Sprint stories

My priorities for this sprint are:-

1. Show players the colour the next player bubble will be
2. Investigate bubble overlapping bug
3. Think about how to make the single bubble remaining scenario more entertaining
4. Destroy player bubble if a power-up is hit (user feedback)
5. Write some more tests

Other things:-

1. Sign up for an ad network

Expected duration

Two weeks (ending 10/08/2014)