Update README.md

Author: SIsilicon

README.md

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-# Godot-3D-text-plugin
+# Godot-3D-text-plugin
+
+Hello _probably_ Godot user! This is a 3D text plugin made for Godot 3.1.
+It's pretty self-explanatory. It adds a node called a `Label3D`, which you can add into your 3D scene. It supports variable sizes, fonts, and more! It even supports extrusion depth.
+
+There are two kinda technical variables though. They're `Step Size` and `Max Steps`. You see, to render extruded text, ray tracing is used to fill in the sides. A smaller `Step Size` makes finer intersections, and `Max Steps` controls how far the rays can go. The disadvantage of using ray tracing is that the text doesn't intersect well with the rest of the scene.
+
+Which is why you can convert the label into a `MeshInstance`. There's a button that shows up in the editor while a `Label3D` is selected. Click it, and a mesh version of the label will be created. For best results, use a large font size. Not `Text Scale` mind you. The size in the font resource. However, the larger the font size, and the more text you have, the longer it takes to create.
+
+That should be all. I hope you'll find my plugin useful!