website/www: make the blog more readble by tightening the letter spacing

Before:

![](https://dl.dropboxusercontent.com/s/milgodmbzbamla8/2014-02-19%20at%202.26%20PM%20%281%29.png)

After:

![](https://dl.dropboxusercontent.com/s/cvnomhcvo5qqd4q/2014-02-19%20at%202.26%20PM.png)

Thanks @amadeus