Measuring distance between two devices? (<30m, as accurate as possible)

Got an update by mail from Pulsed light, they have a new website and among others they disclosed code for Arduino on Github. The website includes technical docs, so I have some reading to catch up....

website: - http://pulsedlight3d.com/ -
github: - GitHub - PulsedLight3D/LIDARLite_Basics: This repository contains sample code demonstrating different features and functions of the LIDAR-Lite Sensor -