Started the docu

Author: HendrikBorgelt

docs/images/CatCore.png

@@ -1,5 +1,32 @@
 # CatCore
 
-A metadata collection for catalysis related research
+Catcore is a metadata collection for catalysis related research, which is intended to be developed into several schema's, such that we can harmonize Metadata representation of various research topics int the domain of catalysis.
+
+As bepicted below, CatCore is devided into four major branches, Reaction, Synthesis, Characterisation and Simulation, each described with respective metadata terminology. 
+![CatCore logo](images/CatCore.png)
+
+## Reaction
+
+![Reaction logo](images/Reaction.svg)
+
+TODO: Description and Link
+## Synthesis
+![Reaction logo](images/Reaction.svg)
+
+TODO: Description and Link
+## Characterisation
+![Reaction logo](images/Reaction.svg)
+
+TODO: Description and Link
+## Simulation
+[![Reaction logo](images/Reaction.svg)](./elements/overview.md)
+
+TODO: Description and Link
+
+
+
+## Schema
+
+The [Schema documentation](./elements/overview.md) for the metadata model written in LinkML Format can be found [here](elements/index.md)
+
 
-- Auto-generated [schema documentation](elements/index.md)