correctly handle 0 in --older_than, --most-recent and --delete-older-than for snapshot
Docker Definition
Fixes CI tests for Curator

Since bloom filters have been removed from 1.5, changes needed to
be added to test for this, otherwise we get grumpy test results.

Add Changelog entry
Merge pull request #226 from christianvozar/features/docker

Docker Definition
Merge pull request #211 from bobrik/none-args

Correctly handle 0 in --older_than, --most-recent and --delete-older-than
ENTRYPOINT Works Better for Execution

Running Curator via ENTRYPOINT will allow execution more in-line with how the Wiki examples are setup rather than needing to specify the ENTRYPOINT and args as would be necessary with CMD.
Merge pull request #237 from christianvozar/patch-1

ENTRYPOINT Works Better for Execution