Updated building on windows instructions in the docs

docs/sources/installation/windows.md

@@ -9,4 +9,10 @@ page_keywords: grafana, installation, windows guide
 There are currently no binary build for Windows. But read the [build from source](../project/building_from_source)
 page for instructions on how to build it yourself.
 
+## Building on Windows
 
+The Grafana backend includes Sqlite3 which requires GCC to compile. So in order to compile Grafana on windows you need
+to install GCC. We recommend [TDM-GCC](http://tdm-gcc.tdragon.net/download).
+
+Copy conf/sample.ini to a file named conf/custom.ini and change the web server port to something like 8080. The default
+Grafana port(3000) requires special privileges on Windows.

docs/sources/project/building_from_source.md

@@ -28,6 +28,10 @@ godep restore                    (will pull down all golang lib dependecies in y
 go build .
 ```
 
+# Building on Windows
+The Grafana backend includes Sqlite3 which requires GCC to compile. So in order to compile Grafana on windows you need
+to install GCC. We recommend [TDM-GCC](http://tdm-gcc.tdragon.net/download).
+
 ## Building frontend assets
 
 To build less to css for the frontend you will need a recent version of of node (v0.12.0),