Issue #42 A better way to manage the version on install

In fact I meant to check `2\.[0-9]+` , I saw your note about changing the regex but now I see that these lines look alike very VERY much in the previous diff, and I realize that I should have never changed this regex in fact.
I'm gonna change it, but as a reminder, this line should only check for minor versions, so I'll change back the regex to `2\.\d+`