Add binder link

Author: SylvainCorlay

README.md

@@ -5,6 +5,12 @@ A Python / ThreeJS bridge utilizing the Jupyter widget infrastructure.
 
 ![Screencast](/screencast.gif)
 
+Getting Started
+---------------
+
+### Try it online with [Binder](http://mybinder.org/)
+
+[![Binder](http://mybinder.org/badge.svg)](http://mybinder.org:/repo/jovyan/pythreejs/notebooks/examples)
 
 Installation
 ------------
@@ -35,5 +41,3 @@ $ jupyter nbextension enable --py --sys-prefix pythreejs
 Note for developers: the `--symlink` argument on Linux or OS X allows one to
 modify the JavaScript code in-place. This feature is not available
 with Windows.
-
-

environment.yml

@@ -0,0 +1,7 @@
+name: pythreejs
+channels:
+  - nodefaults
+  - conda-forge
+dependencies:
+  - pythreejs
+  - matplotlib