Added link to windows compilation instructions.

README.md

@@ -1,7 +1,7 @@
 # OpenModelica
 [OpenModelica](https://openmodelica.org) is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage.
 
-## Dependencies
+## Dependencies (Linux/OSX)
 
 Many software packages are included inside the repositories.
 To get everything running, you will need a few extras:
@@ -31,6 +31,10 @@ $ build/bin/omc --version
 $ (cd testsuite/partest && ./runtests.pl)
 ```
 
+## Compilation (Windows)
+
+Windows instruction are [here](https://github.com/OpenModelica/OMCompiler/blob/master/README.md)
+
 ## Working with the repository
 
 OpenModelica.git is a superproject. Clone the project using one of: