Added missing ZoneInterface implementation
Merge pull request #22 from lmammino/20-add-missing-zone-class

merge #22 Adding missing Zone class (lmammino)

This PR was merged into lmammino:master branch.

Discussion
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|Q            |A  |
|---          |---|
|Bug Fix?     |n  |
|New Feature? |y  |
|BC Breaks?   |n  |
|Deprecations?|n  |
|Tests Pass?  |y  |
|Fixed Tickets|#20|
|License      |MIT|
|Doc PR       |   |
                   

Closes #20

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Commits
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d7cb0a7c6a8388f5ca2d4c9e6e15879cbbb21b80 Added missing ZoneInterface implementation (lmammino)