Update README.md

Downloads cleanup

Author: ppriest

README.md

@@ -24,10 +24,10 @@ Various modules are disabled by default, such as the MAME interactive debugger,
 <a name="installation"/>
 ## Installation and building
 
-Download [msys64-2016-01-07.exe](https://github.com/mamedev/buildtools/releases/download/1.4/msys64-2016-01-07.exe) if you are on 64-bit Windows
-or [msys32-2016-01-07.exe](https://github.com/mamedev/buildtools/releases/download/1.4/msys32-2016-01-07.exe) is you are on 32 bit Windows.
-If you are on 64-bit Windows but wish to produce binaries for both 32-bit and 64-bit download [msys64-32-2016-01-07.exe](https://github.com/mamedev/buildtools/releases/download/1.4/msys64-32-2016-01-07.exe)
-To switch between different mingw versions use **config32.bat** and **config64.bat**
+Downloads:
+* 64-bit Windows - [msys64-2016-01-07.exe](https://github.com/mamedev/buildtools/releases/download/1.4/msys64-2016-01-07.exe) 
+* 32-bit Windows - [msys32-2016-01-07.exe](https://github.com/mamedev/buildtools/releases/download/1.4/msys32-2016-01-07.exe)
+* Dual 32-bit/64-bit - [msys64-32-2016-01-07.exe](https://github.com/mamedev/buildtools/releases/download/1.4/msys64-32-2016-01-07.exe) _(If you have 64-bit Windows but wish to build for both 32-bit and 64-bit. To switch between different mingw versions use **config32.bat** and **config64.bat**)_
 
 If you are installing it in a location other than the default (*c:\msys64* or *c:\msys32*), after you unpack double-click : **autorebase.bat**