Inline message view

Show lint messages inline, next to the code that it applies to. 

![atom-inline-messages](https://raw.githubusercontent.com/mdgriffith/atom-inline-messages/master/img/inline-comments.gif)

Theres a new setting to enable the inline messaging.  I did also mess with the default config to stop the statusbar viewer and activate the inline messenger.  

It looks to be running fine for me, but probably needs a bit more testing than that :)

Im not sure.  That code was left over from when I copied the statusbar-view code and must have gotten renamed somewhere as well.  I'll take it out.

```coffeescript
  # Easy fix for https://github.com/AtomLinter/Linter/issues/99
    try
      if not paneItem
        paneItem = atom.workspaceView.getActivePaneItem()
      currentLine = undefined
      if position = paneItem?.getCursorBufferPosition?()
        currentLine = position.row + 1
    catch e
      error = e
```