Installation tip

Hi guys, this is a really useful library - thankyou!

I just wanted to share with other users that to use it, I downloaded the Source Distribution from PyPi manually, extracted it, cd'd into its base folder, and then was able to install this using:

`ipy -X:Frames -m ensurepip`
`ipy -X:Frames -m pip install -e` (possibly also in an admin cmd, I can't remember)

As it happens, I've never been able to get IronPython 2.7 to install anything from PyPi, I get some /html5/ None + int TypeError or other).

But now, I happily managed to pass 18/23 of my tests after only 5 minutes or so tinkering - so thankyou ever so much! You've saved me from having to set everything up to use unittest!