Add instructions for building with Windows

README.md

@@ -43,10 +43,9 @@ ColorChord: Embedded
 There is work on an embedded version of ColorChord, which avoids floating point operations anywhere in the output pipeline.  Though I have made efforts to port it to AVRs, it doesn't seem feasable to operate on AVRs without some shifty tricks which I'd like to avoid, so I have retargeted my efforts to 32-bit systems, such as the STM32F303, STM32F407, and (somehow) the ESP8266.  ColorChord Embedded uses a different codebase, located in the [embeddedcommon](embeddedcommon/) and distributed among the various embedded* folders.
 
 
-Building and Using
-------------------
-
-On Linux you'll need the following packages, for Debian/Ubuntu/Mint you'll need the following:
+Building with Linux
+-----------------
+Use `apt-get` to install the following packages for Debian/Ubuntu/Mint:
 ```
 apt-get install libpulse-dev libasound2-dev libx11-dev libxext-dev libxinerama-dev libusb-1.0-0-dev
 ```
@@ -56,8 +55,26 @@ To make colorchord, type:
 ```
 make
 ```
+Building with Windows
+-------------------
 
-Then, to run it, use the following syntax:
+With either 64bit or 32bit [MSYS2](https://msys2.github.io/) installed, run the _MSYS2 MSYS_ launcher and use `pacman` to set up a MinGW32 toolchain, if you don't have one already:
+```
+pacman -S mingw-w64-i686-toolchain
+```
+If you see "`/mingw32 exists in filesystem`", you must temporarily rename or relocate the _mingw32.exe_ file at MSYS2's root folder level and try again. Restore _mingw32.exe_ before moving on.
+
+Next, run the _MSYS2 MinGW 32bit_ launcher to access the toolchain. The previously launched _MSYS_ terminal can be closed.
+
+To make colorchord, navigate to your working copy and type:
+```
+mingw32-make colorchord.exe
+```
+
+Using
+-----
+
+To run colorchord, use the following syntax:
 
 ```
 ./colorchord [config file, by default 'default.conf'] [any additional parameters]