fixed bug where you could not select dot character in main activity

There was a bug on my Samsung Galaxy S5 Android version 4.4.2 where no dot (.) character was present in the EditText. This pull request would fix that.


The bug: 

![gamepad bug](https://cloud.githubusercontent.com/assets/2267038/3666471/0e94b220-11f2-11e4-9ab8-48392bc604c9.jpg)

The fix: 

![fixed](https://cloud.githubusercontent.com/assets/2267038/3666507/7b7e4f7c-11f2-11e4-870f-d4d5911fc8a7.jpg)