Added README.

README.md

+# TTC 2018 LiveContest: JastAdd solution(s)
+
+This repository contains the source for the JastAdd solutions for the [TTC 2018 LiveContest](https://www.transformation-tool-contest.eu/2018/solutions_liveContest.html) described in detail in [the solution paper](http://ceur-ws.org/Vol-2310/paper8.pdf).
+The source code for running this (and every other solution) can be found at the [github repository](https://github.com/TransformationToolContest/ttc2018liveContest).
+
+## Running the example
+
+In order to run the example, Gradle is used. Using the Gradle wrapper is important.
+To get the tests running, one symlink is needed:
+
+```bash
+> ln -s $TTC_REPO/models solve/src/test/resources/
+```