Add README

README.md

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+# OCaml iPhone Simulator App: Voronoi
+
+## OCaml for iOS Simulator
+
+Compile from source
+[http://psellos.com/ocaml/compile-to-iossim.html](http://psellos.com/ocaml/compile-to-iossim.html)
+
+or get [a prebuilt package from Psellos](http://psellos.com/pub/ocamlxsim/ocaml-3.12.1+xsim1.dmg)
+
+## Compile Voronoi
+
+Edit SDK paths in Makefile if necessary. Current Makefile is tested on Xcode 4.2.1. The paths have to be changed if you are running Xcode 4.3 or other versions.
+
+### Compile code
+    make
+
+### Run in simulator 
+    make execute
+
+## License
+
+MIT