Since 4.11 the community plugin I’ve maintained has been included in the engine. Simply enable the plugin in your project to begin using it
Then change your game mode to use the convenience character to see your hands like this
For quick setup: https://developer.leapmotion.com/unreal#quick-setup
Latest documentation: https://github.com/getnamo/leap-ue4
Hopefully you like the updates and convenience blueprint content, post any issues you have to the main forum thread or the master repository.