Create unified batch file for running the game from the source directory on Windows and update README.md

README.md

@@ -28,11 +28,11 @@ All assets needed are bundled with the executable.
 
 If you want the bleeding edge version, download [this](https://github.com/MillaBasset/cambridge/archive/master.zip). Extract the ZIP to a folder of your choosing.
 
-Assuming you're on a 64-bit system, you can double-click `start_win64.bat` to run the game. If that doesn't work, open a Command Prompt where you extracted Cambridge and run:
+If you're on Windows, you can double-click `start.bat` to run the game. If that doesn't work, open a Command Prompt where you extracted Cambridge and run:
 
 	dist\windows\love.exe .
 
-If you're on a 32-bit system, you'll want to double-click `start_win32.bat`. If that doesn't work, run this instead:
+If that doesn't work, run this instead, still using Command Prompt where you extracted Cambridge:
 
 	dist\win32\love.exe .
 

start.bat

@@ -0,0 +1,7 @@
+@echo OFF
+
+rem This solution of detecting the current CPU taken from here: https://stackoverflow.com/a/24590583
+reg Query "HKLM\Hardware\Description\System\CentralProcessor\0" | find /i "x86" > NUL && set CURRENT_CPU=32BIT || set CURRENT_CPU=64BIT
+
+if %CURRENT_CPU%==32BIT .\dist\win32\love.exe .
+if %CURRENT_CPU%==64BIT .\dist\windows\love.exe .

start_win32.bat

@@ -1 +0,0 @@
-dist\win32\love.exe .

start_win64.bat

@@ -1 +0,0 @@
-dist\windows\love.exe .