Integration with ReviewBot has been added for the nyc code coverage

tool.
This tool can be configured to run on most JavaScript setups by

providing a list of install steps and test command in the integration

configuration.
It utilizes the 'json-summary' backend to provide basic per-file

thresholds and opens issues on files that do not meet these thresholds.
Documentation has been added for this tool.

Tool has been tested with a basic JavaScript test repository with

multiple thresholds, using npm and jasmine-node. Other frameworks

have had basic testing done.