Config for non-mujoco users

[danbri]

Related to #5 but to say that any config that doesn't assume a mujoco license would be great (including AMI-packing step if that is relevant).

[gregretkowski]

I was able to use this code with Roboschool - which replicate the Mujoco environments but use Bullet3 as the physics engine. Look in https://github.com/gregretkowski/kube-es-starter/tree/master/docker at the humanoid.json and the Dockerfile for the small tweaks to make to drop in Roboschool