* Emit a signal when the Pipeline gets started.

src/libtomahawk/Pipeline.cpp

@@ -95,6 +95,7 @@ Pipeline::start()
 {
     tDebug() << Q_FUNC_INFO << "Shunting" << m_queries_pending.size() << "queries!";
     m_running = true;
+    emit running();
 
     shuntNext();
 }

src/libtomahawk/Pipeline.h

@@ -82,6 +82,7 @@ public slots:
     void databaseReady();
 
 signals:
+    void running();
     void idle();
     void resolving( const Tomahawk::query_ptr& query );