Update SiLabs/MakeHexfiles.bat

Updated to revision 1.1 of the file.
Now batch results will be saved in MakeHex_Result.txt
Console echoes are reduced to keep them more simple and clear.
Adapted settings to BLHeli Rev 10.0 beta
Merge pull request #7 from 4712/patch-2

Update SiLabs/MakeHexfiles.bat