moves gallery to rst. youtube videos were flakey on my local hosting.…

…. maybe they'll be better online

CONTRIBUTING.md

@@ -4,7 +4,7 @@
 If you have improvements to Drake, send us your pull requests! For those
 just getting started, Github has a [howto](https://help.github.com/articles/using-pull-requests/).  Please make sure you look at our [Developer's page](http://drake002.csail.mit.edu/drake/sphinx/developers.html) for information on code style, etc, and be prepared to engage in active code review on your pull request.
 
-We would also like to hear about your success stories if you've used Drake in your own projects.  Please consider contributing to our [gallery](http://drake002.csail.mit.edu/drake/gallery.html) by editing gallery.html in the drake/doc/ directory and submitting a pull request.
+We would also like to hear about your success stories if you've used Drake in your own projects.  Please consider contributing to our [gallery](http://drake002.csail.mit.edu/drake/sphinx/gallery.html) by editing gallery.html in the drake/doc/ directory and submitting a pull request.
 
 Important note: Drake is an open source project licensed under extremely flexible terms intended to encourage use by anyone, for any purpose. When you make a contribution to the Drake project, you are agreeing to do so under those same terms. The details are below; if you aren't comfortable with those terms, we're still friends but you shouldn't contribute.
 

drake/doc/index.rst

@@ -87,6 +87,7 @@ Next steps
 .. toctree::
    :maxdepth: 1
 
+   gallery
    installation
    Introduction and Examples <http://underactuated.csail.mit.edu/underactuated.html?chapter=drake>
    developers