Status bar summary

![screen shot 2014-12-03 at 21 46 54](https://cloud.githubusercontent.com/assets/1850538/5288679/499f3e68-7b37-11e4-9555-53dee1cf3f9e.png)

So it display the number of errors/warning.

Let me know if you need further information about the commit.
I am not sure about this, I mean it works perfectly but should I make a different view for the html content?

Like on the inline-view: https://github.com/AtomLinter/Linter/blob/master/lib/inline-view.coffee#L59-L66