Add link to wiki on example environments

unity-environment/README.md

     - Save environment binary to a sub-directory containing the model to use for training *(you may need to click on the down arrow on the file chooser to be able to select that folder)*
 
 ## Example Projects
-The `Examples` subfolder contains a set of example environments to use either as starting points or templates for designing your own environments.
+The `Examples` subfolder contains a set of example environments to use either as starting points or templates for designing your own environments. 
+
+For more informoation on each of these environments, see this [wiki page](../../../wiki/Example-Environments).
 
 Within `ML-Agents/Template` there also exists:
 * **Template** - An empty Unity scene with a single _Academy_, _Brain_, and _Agent_. Designed to be used as a template for new environments.