developer-handbook.md

+### Details for developer
+
+ATHEN is an Eclipse 4 RCP application, built with Maven Tycho, some good tutorials can be found here:
+
+* http://www.vogella.com/tutorials/EclipseRCP/article.html
+* http://www.vogella.com/tutorials/EclipseTycho/article.html
+
+
+## Getting started:
+
+First, download an eclipse from (might be outdated):
+
+https://www.eclipse.org/downloads/?
+
+If possible, select the Eclipse for RCP/RAP developer, otherwise you have to manually install additional plugins. 
+This can be done via Help -> install new software
+
+Most importantly you need:
+
+* Eclipse plug-in development environment.
+* Eclipse e4 Model Tooling
+
+The enxt step should be the download of the repository or alternatively to check it out, using:
+
+```
+git clone https://gitlab2.informatik.uni-wuerzburg.de/kallimachos/ATHEN.git
+```
+
+If you reuse an existing instance of eclipse it is best practive to create a separate workspace for ATHEN.
+
+In Eclipse, you should import the aggregator project **de.uniwue.mk.athen** as a Maven project.
+ATHEN has its own target definition file, located in:
+```
+\releng\de.uniwue.mk.athen.target\de.uniwue.mk.athen.target.target
+```
+Open this file with the built-in target editor and activate it using the "set as target platform" button. (This should cause a number of downloads)
+A gentle introduction to target definition files can be found here:
+
+http://www.vogella.com/tutorials/EclipseTargetPlatform/article.html
+