empty requirements.txt

[saikrishna-1996]

Hey, thanks for open sourcing this!
requirements.txt look empty, could you update it?

[m-r-munroe]

Requires:

• matplotlib
• numpy
• tensorflow (1.x)
  • including tensorflow.contrib.slim which I do not know if it is in rf 2.x link
• gym
• scikit-learn

They also have things that look like libraries that are actually subdirectories

• common.hps_setup is really src.common.hps_setup