Remove extra whitespace preceeding #hextris hashtag

I noticed that the [`#hextris score of…` tweets](https://twitter.com/search?f=realtime&q=hextris%20score%20of&src=typd) have an extra space before them:

<img src="https://cloud.githubusercontent.com/assets/121322/3976186/f2048dee-281a-11e4-8522-712e7952858d.png" width="50%">

This Pull Request fixes it, but there may be a better approach.

**Before:** 
```
Can you beat my  #hextris score of 1337 points on http://hextris.github.io/hextris?
```

**After:** 
```
Can you beat my #hextris score of 1337 points on http://hextris.github.io/hextris?
```

Cheers,
  Lee :beers: