Added new file for documentation

doc/transformations.rst

@@ -0,0 +1,20 @@
+Model transformations
+=====================
+
+Explain model transformations
+
+Specification
+-------------
+
+Explain how to specify a model transformation, with a drawn out example.
+
+RAMification
+^^^^^^^^^^^^
+
+Explain how RAMification works and what it does.
+Specifically, which attributes does it add etc.
+
+Tracability links
+-----------------
+
+How do tracability links work?