DOC: Convert README to markdown for proper github rendering.

README.md

@@ -15,16 +15,16 @@ Refer to DEPENDS.txt for a list of dependencies.
 
 The SciKit may be installed globally using
 
-python setup.py install
+    $ python setup.py install
 
 or locally using
 
-python setup.py install --prefix=${HOME}
+    $ python setup.py install --prefix=${HOME}
 
 If you prefer, you can use it without installing, by simply adding
-this path to your PYTHONPATH variable and compiling the extensions::
+this path to your PYTHONPATH variable and compiling the extensions:
 
-  python setup.py build_ext -i
+    $ python setup.py build_ext -i
 
 License
 -------