Add more ranks

[knyazer]

A good idea for growing the appeal of increasing wpm would be to add a bunch wpm-based ranks, as it would increase game-llike feel of the app. I'm talking about, different nicks colors based on wpm, for example how it is made on codeforces.com, as it makes your progress clearly visible.

For example, when talking about codeforces it is common to say that one have "blue" or "red" rank, or that one is "master". I reckon it strengthen the attachment to the plaftorm.

I suppose that it is not that complicated to implement, but it would be nice to see your progress also in terms of colors/ranks names.