Add windows distribution instructions

dist/windows_instructions.md

@@ -0,0 +1,16 @@
+# Building with mingw
+
+Using QtCreator, import this project via its `.pro` file and enable a mingw build kit.
+
+## SSL DLL files required at runtime
+
+After building, it will be necessary to include some `.dll` files that will be needed during runtime. Copy these into the build directory alongside the compiled `.exe` file.
+
+```
+C:\Qt\Tools\mingw530_32\opt\bin\libeay32.dll
+C:\Qt\Tools\mingw530_32\opt\bin\ssleay32.dll
+```
+
+## Distribution
+
+TODO