removing duplicate wget instructions in README file
removing duplicate wget instructions in README file

removing duplicate wget instructions in README file lines 73-79 were
duplicated at 80-81

bwssytems/ha-bridge,bwssytems/amazon-echo-bridge-compact,bwssytems/ha-bridge,bwssytems/ha-bridge,bwssytems/amazon-echo-bridge-compact,bwssytems/amazon-echo-bridge-compact