add website tracking to the repository

[vlaskine]

add website tracking and stats along the lines suggested in Peter's e-mail:

"Well, "popular" is in this case 1 hit from brazil and 2 from the czech republic. There's no special reason why anybody would be looking at that repository - so I'm surprised it shows any hits other than me.

It works by embedding an image in the readme file (https://github.com/petermoz/keyboard-anywhere/blob/master/README.rst) - so whenever someone views the repository page you get a hit. Doesn't work for "git clone" - just website views.

If you want to track a particular web link (such as a file download link) you can use a url shortner (e.g. http://goo.gl) For example some time ago I made goo.gl/DOYoK point to my ICRA paper. If you click the link, it redirects to my homepage and downloads the paper. But it also logs the fact that the link was clicked. The analytics are then available at http://goo.gl/#analytics/goo.gl/DOYoK/all_time . As an example of the kind of data you can get, here's the analytics for a google link http://goo.gl/#analytics/goo.gl/l6MS/all_time

To create that github thing, I logged into the bitdeli.com with my github credentials - it lists my repos, and adds a button that submits a pull request. Merge the pull request, and it'll update the readme with the embedded button"