Update version

[sahilph]

Overview

Update to v1.7.2 and v2.1.2

Testing recommendations

treehouses/rpi-couchdb:1.7.2-0.0.1-update_version-3389cbae (1.7.2) treehouses/rpi-couchdb:2.1.2-0.0.1-update_version-3389cbae (2.1.2)

GitHub issue number

Fixes #26

Related Pull Requests

Checklist

• [x] Code is written and works correctly;
• [x] Changes are covered by tests;
• [x] Documentation reflects the changes;

[sahilph]

The last commit is only update to readme file. hence the build was cancelled.