Introduce basic packager using ruby
include dependencies during offline packaging
use cache directory when downloading dependencies
refactor tests
Don't pollute buildpack directory with packager artifacts
provide entry point for bash scripts
convert buildpack-packager to a binary with a manifest

[#82513994]
advise user they need a manifest file if it is missing

[#82513994]
Improve usability through usage message

Fixed -online showing up in zip name
Refactored to use less bash.

[#82513994]
Add --use-cache support to packager binary

[#82513994]
Use new manifest.yml format

[#83883822]
cleanup zip file before creating new one [#83763626]