Merge branch 'master' into release-v0.6

README.md

 
 Your opinion matters a great deal to us. Only by hearing your thoughts on the Unity ML-Agents Toolkit can we continue to improve and grow. Please take a few minutes to [let us know about it](https://github.com/Unity-Technologies/ml-agents/issues/1454). 
 
+
-team at ml-agents@unity3d.com.
+team at ml-agents@unity3d.com. 
 
 ## Translations
 

SURVEY.md

+# Unity ML-Agents Toolkit Survey
+
+Your opinion matters a great deal to us. Only by hearing your thoughts on the Unity ML-Agents Toolkit can we continue to improve and grow. Please take a few minutes to let us know about it. 
+
+[Fill out the survey](https://goo.gl/forms/qFMYSYr5TlINvG6f1)