Update and rename README.org to README.md

Changed README format to md from org. To incllude the RTD badge.

Author: iimog

README.md

@@ -0,0 +1,5 @@
+# TBro Documentation Project
+The built version can be found at [readthedocs.org](http://tbro-tutorial.readthedocs.org/en/latest/)
+
+Documentation state:
+[![Documentation Status](https://readthedocs.org/projects/tbro-tutorial/badge/?version=latest)](https://readthedocs.org/projects/tbro-tutorial/?badge=latest)