Add Windows-specific flash command

Signed-off-by: Brian Baltz <[email protected]>

Author: Brian Baltz

platform.txt

@@ -107,3 +107,4 @@ tools.arduino101load.erase.pattern=
 tools.arduino101load.bootloader.params.verbose=
 tools.arduino101load.bootloader.params.quiet=
 tools.arduino101load.bootloader.pattern=/bin/bash {runtime.tools.flashpack.path}/flash_dfu.sh
+tools.arduino101load.bootloader.pattern.windows=cmd /C {runtime.tools.flashpack.path}/flash_dfu.bat