Use system temp directory for the cache.

To resolve phar cache issue reported in mglaman#17

Need to skip cleanup

Add GitHub release deploy

Merge pull request mglaman#10 from mglaman/release-notes-command

Add initial command to generate a release note

Update README for available commands.

Add command to show maintainer issues

If a test or build is running, provide prompt to watch it.

Fix mglaman#4

Add aliases, update the ListCommand

Update README for v0.0.1