INSTALL: Add example for Windows
Looks like it isn't clear for some people reading that file that we
support Windows and MSVC ...
diff --git a/INSTALL b/INSTALL
index 9cb1b03..ad661ac 100644
--- a/INSTALL
+++ b/INSTALL
@@ -21,7 +21,12 @@
cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug ..
make
-On Windows you should choose a makefile gernerator with -G.
+On Windows you should choose a makefile gernerator with -G, for example:
+
+ cmake -G "Visual Studio 12 2013" -DCMAKE_BUILD_TYPE=Debug /path/to/source
+
+You can also use the CMake GUI which is shipped with CMake. It will list all
+available generators for MSVC on Windows.
### CMake standard options
Here is a list of the most interesting options provided out of the box by
