Problem fixes thanks to issue peters-r#1

Graph.h

@@ -83,7 +83,7 @@ class Graph
     template<class T>
     Graph& operator << (T&& rEdge) {
         // forward as r-value reference
-        makeEdge(std::move(rEdge))
+        makeEdge(std::move(rEdge));
         return *this;
     }
 
@@ -108,7 +108,7 @@ class Graph
     * Retrieves a node by the given id. 
     * @return a pointer to the node or NULL if not found. 
     */
-    Node* Graph::findNodeById(const std::string& id);
+    Node* findNodeById(const std::string& id);
 
     /** Retrieves all edges that have rSrc as source node and rDst as destination node. */
     tEdges findEdges(const Node& rSrc, const Node& rDst);