Enhance the framework that display images declared in the help section of Galaxy tool configs contained in tool shed repositories to also work in README files with a .rst extension that are contained in repositories.  Remote images that are available view http requests are supported as are any relative path for locating the image if it is contained within the repository hierarchy.  The previously required $PATH_TO_IMAGES is no longer required, and is ignored if used.  The following image declarations are all supported:
.. image:: http://www.animalphotos.me/mammal/mammal-wcat_files/wildcat7.jpg
.. image:: https://raw.github.com/peterjc/picobio/769e4a77194587207f50707939db42b9f04b36f1/galaxy_workflows/rxlr_venn_workflow/Phyca11_example_output.png
.. image:: $PATH_TO_IMAGES/count_modes.png
.. image:: count_modes.png
.. image:: /deep/Phyca11_example_output.png