Issue 14: Fix installation and run error

[Hyrtsi]

Related to: https://github.com/nghorbani/homogenus/issues/14

Problem: I wasn't able to successfully install and run the module by following the instructions in the repository. Solution: I present a solution how to fix the problem. I have tested this with:

Ubuntu 20.04 Python 3.7.12 and Python 3.8.10 Tensorflow 2.7.2 Protobuf 3.9.2 Numpy 1.17.3

It probably works on other systems, too. Thank you.

My PR doesn't necessarily have to be merged but this serves here as a guide for someone else running into problem like I did. I hope I save someones time.