Improve Installation Guide

[mgifford]

I couldn't get it running on a Mac environment. Having clearer installation instructions would probably help a lot of folks. Thanks!

[vringar]

Hey,
This project has been dormant for >2 years at this point. So there is no other person to improve the installation instructions
If you are having problems with getting things set up, consider posting the error message or describing the step at which you got stuck and then filing a PR to improve the docs :)