Evaluate Descendent Studios' OSS plugins for inclusion

[terrehbyte]

@DescendentStudios, the makers of Descent: Underground, have open-sourced a number of smaller modules or utilities that were developed as a part of the development process for the aforementioned game. These works are scattered across multiple repositories associated with their GitHub entity.

Most of these projects seem to have only been last updated last year, 2016, and show no indication of being maintained on a regular basis in accordance with Unreal Engine's fairly frequent releases. However, that may only be because they merely require no work for use in the latest version of the engine.

Works for Review

• PingPlugin
• BlinkenPlugin
• ExtraConfigPlugin
• DSUtilityPlugin
• CommandLineParametersPlugin
• XMPPChatPlugin
• UE4JoystickPlugin

The above works should be reviewed to see if they meet the guidelines and be considered for inclusion in the list. Some of them, at first glance, seem a little sparse on documentation, so they'll likely be excluded for that, but others do seem promising...

I'll probably look at including a few of these in my own projects and adding them to the list if they seem solid.