Summary:
Still missing:
== Code and tests: ==
* remove path
* contains path (but this is essentially the same as get path)
* read/write from file
== Tests: ==
* checksumming directories
Test Plan: well, it kind of builds.
Reviewers: durham, simpkins, lcharignon
Reviewed By: lcharignon
Subscribers: net-systems-diffs@, mitrandir, mjpieters, akushner, rmcelroy
Differential Revision: https://phabricator.fb.com/D3120166
Signature: t1:3120166:1459464981:60f19dd1e36d62776a69fa88c018122a4be27d87