Better markdown

README.md

-Open edX Demonstration Course
-=============================
+# Open edX Demonstration Course
 
 This is a demonstration course you can import into edX Studio.
 
- * Download the [gzipped tarball](https://github.com/edx/edx-demo-course/releases/download/1.0/edx_demo_course_1_0.tar.gz). (make sure your OS doesn't gunzip it for you)
- * In Studio, create an empty course.
- * Under Tools, select Import and choose the downloaded, gzipped tarball.
+* Download the [gzipped tarball][] (make sure your OS doesn't gunzip it for
+  you).
+* In Studio, create an empty course.
+* Under Tools, select Import and choose the downloaded, gzipped tarball.
 
-All content is made available under a Creative Commons BY-NC-SA 3.0 US License
-(see <http://creativecommons.org/licenses/by-nc-sa/3.0/us/>)
+All content is made available under a [Creative Commons BY-NC-SA 3.0 US
+License][cc].
 
-All code is made available under an AGPLv3 License (see AGPL_LICENSE)
+All code is made available under an [AGPLv3 License][agpl].
+
+
+[agpl]: AGPL_LICENSE
+[cc]: http://creativecommons.org/licenses/by-nc-sa/3.0/us/
+[gzipped tarball]: https://github.com/edx/edx-demo-course/releases/download/1.0/edx_demo_course_1_0.tar.gz