explain using a local server for examples. Closes #612

examples/README.md

@@ -0,0 +1,10 @@
+NOTE: To use these examples, you must run a simple local webserver. They WILL NOT work if you simply open them in a browser from the file system.
+
+If you have python installed, here are simple steps to do this.
+
+1. Open a terminal shell
+1. Change to the examples directory (.../TimelineJS/examples)
+1. Type `python -m SimpleHTTPServer 8000`
+1. in your web browser, open `http://localhost:8000/example_json.html` (or whatever other file you want to see
+)
+