put --build-id option into Daily Build option group, where it appears to belong
Merge branch 'build-id-option-group' of https://github.com/mykmelez/mozdownload into mykmelez-build-id-option-group
Add support for downloading b2g builds (#23)
Update version history and bump version to 1.3
Move build-id to option group (#28)
Don't download stub installer by default (#31)
Update version history and bump version to 1.4 (#33)
Don't download stub installer for tinderbox builds (#41)
Implemented support for downloading a file from a specified URL (#35)
Implemented support for basic authentication (#36)
Added URL and authentication examples to README
Don't download stub installer for tinderbox builds (#41)
Bump version to 1.5 and update version history (#45)
Implemented download retries. Fixes issue #39
Bump version to 1.6 and update version history. Fixes issue #53
Implemented a download timeout (fixes issue #50)
Implement automatic retries for locating the binary. Fixes issue #58
Added version number to docstring and --help output. Fixes issue #34
Added full command line options to README. Fixes issue #44
Remove default=None from OptionParser options (#43)