Windows: new section on using Bash to compile on command line under Windows

docs/Compile.rst

@@ -463,6 +463,29 @@ Alternatively (or additionally), consider installing an improved Windows termina
 such as `Cmder <http://cmder.net/>`_. Easily installed through Chocolatey with:
 ``choco install cmder -y``.
 
+**Note for Cygwin/msysgit users**: It is also possible to compile DFHack from a
+Bash command line. This has three benefits:
+
+* When you've installed Git and are using its Bash, but haven't added Git to your path:
+
+  * You can load Git's Bash and as long as it can access Perl and CMake, you can
+    use it for compile without adding Git to your system path.
+
+* When you've installed Cygwin and its SSH server:
+
+  * You can now SSH in to your Windows install and compile from a remote terminal;
+    very useful if your Windows installation is a local VM on a \*nix host OS.
+
+* In general: you can use Bash as your compilation terminal, meaning you have a decent
+  sized window, scrollback, etc.
+
+  * Whether you're accessing it locally as with Git's Bash, or remotely through
+    Cygwin's SSH server, this is far superior to using ``cmd.exe``.
+
+You don't need to do anything special to compile from Bash. As long as your PATHs
+are set up correctly, you can run the same generate- and build/install/package- bat
+files as detailed above.
+
 Building/installing from the Visual Studio IDE:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 After running the CMake generate script you will have a new folder called VC2010.