Update start-windows.bat

Previous command didn't work on a windows7 machine. (the line-endings were unix line-endings)

Also, when changing the line endings, the script didn't work yet, as the command prompt closed and didn't launch anything.
Merge pull request #2 from ThomasPinna/patch-1

Update start-windows.bat
Merge pull request #1 from mikekestemont/master

local update