UE4 plugin template

I've published a template of a plugin for Unreal Engine 4, which might be a valuable boilerplate for writing any new plugin that requires UI in the Engine's Editor.

It can be downloaded from here: https://github.com/zompi2/UE4EditorPluginTemplate

There are few plugin templates in the Unreal Engine already, but they lack the type of plugin I like to use the most.

It uses Editor Utility Widget to compose the UI and it can be opened in the new tab by clicking the button from the top bar menu or by using a keyboard shortcut.

It eliminates two issues I have when writing new plugins:

1. It doesn't create a big button in the top bar, so the bar does not overflow with extra buttons.

2. It doesn't require to write code in Slate, which, to be honest, is very burdensome to use.

I hope this little peace of code will help others. Cheers! <3