Update README.md

Author: coryleach

README.md

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+<b>Library of ScriptableObject types for Unity:</b></br>
+
+> <b>RuntimeSets</b></br>
+> GameObjects can add themselves to RuntimeSet assets at runtime to quickly get sets of GameObjects</br>
+
+> <b>Variables</b></br>
+> Use scriptable objects to share variable instances between objects. Subscribe for value change events.</br>
+
+> <b>GameEvents</b></br>
+> Hook up events between scenes and prefabs using scriptable objects as game events</br>
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 ## Author