zpm: clean up unused imports
Add simple setup script
gitignore: remove unused entries

The bin entry were shadoing an existing directory. I would much prefer
to add patterns to .gitignore on a per-case basis when we need them.
gitignore: ignore editor backup files
Merge pull request #9 from mgeisler/distutils

Add setup.py and move zpm code to `zpmlib` package
Add command line help epilog

This adds an epilog to the --help output to show the user how to get
detailed help about a specific command. Example:

$ zpm bundle --help
or
$ zpm new --help
Add setup.py
Add tox.ini and test-requirements.txt
Add 'cover' environment to tox

'cover' allows one to run test coverage reports on zpm code.
tox.ini: update references to zpmlib

This package was renamed from zpm to zpmlib.
Merge pull request #10 from mgeisler/ignore

Amended .gitignore
Merge pull request #11 from larsbutler/improve-cli-usage-help

Add command line help epilog
Merge pull request #12 from larsbutler/test-scaffolding

Test scaffolding