Added gson-2.3 jar to project and ant build.

services/git-bridge/src/uk/ac/ic/wlgitbridge/writelatex/JSONSource.java

@@ -0,0 +1,12 @@
+package uk.ac.ic.wlgitbridge.writelatex;
+
+import com.google.gson.JsonElement;
+
+/**
+ * Created by Winston on 06/11/14.
+ */
+public interface JSONSource {
+
+    public void updateFromJSON(JsonElement json);
+
+}

services/git-bridge/src/uk/ac/ic/wlgitbridge/writelatex/Snapshot.java

@@ -1,7 +1,21 @@
 package uk.ac.ic.wlgitbridge.writelatex;
 
+import com.google.gson.JsonElement;
+
 /**
  * Created by Winston on 03/11/14.
  */
-public class Snapshot {
+public class Snapshot implements JSONSource {
+
+    private int version;
+
+    public Snapshot() {
+
+    }
+
+    @Override
+    public void updateFromJSON(JsonElement json) {
+
+    }
+
 }

services/git-bridge/src/uk/ac/ic/wlgitbridge/writelatex/api/DummySnapshotDBAPI.java

@@ -3,17 +3,30 @@ package uk.ac.ic.wlgitbridge.writelatex.api;
 import org.eclipse.jgit.lib.Repository;
 import uk.ac.ic.wlgitbridge.writelatex.Snapshot;
 
+import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
 
 /**
  * Created by Winston on 03/11/14.
  */
 public class DummySnapshotDBAPI implements SnapshotDBAPI {
 
+    private Map<String, Map<String, Integer>> projects;
+
+    public DummySnapshotDBAPI() {
+        projects = new HashMap<String, Map<String, Integer>>();
+
+    }
+
+    private void initTestData() {
+
+    }
+
     @Override
     public boolean repositoryExists(String name) {
-        return true;
+        return projects.containsKey(name);
     }
 
     @Override