Added a tarball distribution for ivory.

Fixes #19.
Use release distribution in example. Fix bin/ivory script.
Merge pull request #81 from ambiata/topic/distribution

Added a tarball distribution for ivory.
Add basic contact details pointer to raising issues.
Added Charles' account.
Merge pull request #82 from ambiata/topic/contact

Add basic contact details pointer to raising issues.
Removed entry point from all command line tools except `main`.

Fixes #49.
Add explicit setting to ensure main is never set for assembly.