Readme.md update, also added 2 screenshots.

README.md

@@ -1 +1,24 @@
-# entity-spell-system-addons
+# Entity Spell System Addons
+
+Addons for my engine modules, for easier development.
+
+## ESS Data
+
+This is an addon for https://github.com/Relintai/entity_spell_system, to help with editing, and managing all game related the data in the project.
+
+Looks like this:
+
+![ess_data screenshot](screenshots/ess_data.png)
+
+## Prop Tool
+
+This is an addon for https://github.com/Relintai/voxelman, to help with creating/editing props.
+
+Props are 3d obects in the world, they can contain lights (VoxelmanLight), meshes (MehDataResorce), and other Props, and scenes.
+
+VoxelmanLights are precalculated lights inside the cunks.
+MeshDataResources exists, because you cannot access mesh data in gles2 from normal meshes. Voxelman merges all meshes that you add like this automatically.
+
+Looks like this:
+
+![prop_tool screenshot](screenshots/prop_tool.png)