inc 3dball steps

config/ppo_transfer/3DBall.yaml

   3DBall:
     trainer_type: ppo_transfer
     hyperparameters:
-      batch_size: 64
+      batch_size: 1200
       buffer_size: 12000
       learning_rate: 0.0003
       beta: 0.001
         gamma: 0.99
         strength: 1.0
     keep_checkpoints: 5
-    max_steps: 500000
+    max_steps: 1000000
     time_horizon: 1000
     summary_freq: 12000
     threaded: true