added instructions on the installation of the editors

README.md

@@ -21,7 +21,7 @@ There are two main tasks in running a co-simulation with HintCO:
 
 Co-simulation scenario are just xml files. See [watertanks.xmi](HintCOEngine/examples/watertanks.xmi) for an example.
 
-HintCO provides EMF Editor Plugins to edit such files. To use them, install the `HintCO.edit_*.jar` and `HintCO.editor_*.jar` files into your favorite eclipse distribution.
+HintCO provides EMF Editor Plugins to edit such files. To use them, setup the development environment (instruction below), and drop the `HintCO.edit_*.jar` and `HintCO.editor_*.jar` files into the `plugins` folder of an  eclipse modelling tools distribution (Photon Release 4.8.0).
 
 #### Running Co-simulations