Merge pull request #247 from NoahAndrews/fix-path-script

Fix important bugs in the path script for Windows

1-setup-path-win.bat

@@ -5,8 +5,14 @@ SET CMDLINERUNSTR=%SystemRoot%\system32\cmd.exe
 SET NEWPATH1="C:\MinGW\msys\1.0\bin"
 SET NEWPATH2="C:\MinGW\bin"
 
-:: Make sure paths exist
-IF NOT EXIST !NEWPATH1! (ECHO Path not found: %NEWPATH1% && GOTO ExitBatch)
+:: Make sure we're running with administrator privileges
+NET SESSION >nul 2>&1
+IF ERRORLEVEL 1 (
+	ECHO FAILED. Run this script with administrator privileges.
+	GOTO ExitBatch
+)
+
+:: Make sure the second path exists. The first path won't be created until the second script is run
 IF NOT EXIST !NEWPATH2! (ECHO Path not found: %NEWPATH2% && GOTO ExitBatch)
 
 :: Add paths