add script for auto-completion in bash

- it is not context sensitive in terms of devices (except eeprom)
- several mutually exclusive flags should be removed (also prevent repetition)
- it is not integrated into the installer
- not tested on windows
add installer, remove use of arguments source code
add missing flash flags
move ./install_autocomplete to ./bootstrap

- still need to move the dfu_programmer compgen file to appropriate
  os based location
install autocomplete script no longer needed
Merge pull request #8 from swinman/tab_complete

Tab complete