Configure Installation Directory

0.10.0

added ability to configure the installation directory (#21)

added epoch support

0.9.0

added epoch support

quality-of-life changes

• can read version number from setup.py if not present in manifest (was required in manifest)
• can set user/group that will be used for rpm files (was always a user with the same name as the virtualenv you're created)

option to upgrade the wheel

thanks @alvin-huang

overwrite rpms when invoking fpm

fpm has a -f command that won't bomb out if an fpm is there already, and instead overwrite it. We now set that flag.

either install or copy the python packaging into the rpm/dev

this was accidentally overlooked in the first release.