refactor pybullet/gym to allow instantiating environments directly from a pybullet install:

work-in-progress (need to add missing data files, fix paths etc)

example:

pip install pybullet
pip install gym

python
import gym
import pybullet
import pybullet_envs
env = gym.make("HumanoidBulletEnv-v0")

examples/pybullet/gym/pybullet_envs/data/table/table.mtl

@@ -0,0 +1,16 @@
+newmtl table
+  Ns 10.0000
+  Ni 1.5000
+  d 1.0000
+  Tr 0.0000
+  Tf 1.0000 1.0000 1.0000 
+  illum 2
+  Ka 0.0000 0.0000 0.0000
+  Kd 0.5880 0.5880 0.5880
+  Ks 0.0000 0.0000 0.0000
+  Ke 0.0000 0.0000 0.0000
+  map_Ka table.tga
+  map_Kd table.png
+  
+  
+