Small fixes 2

writers/qaWriter_manager.h

@@ -15,7 +15,7 @@ private:
 public:
   virtual ~qaWriter_manager();
 
-  virtual void Init(std::string filename, std::string treename) = 0;
+  virtual void Init(std::string filename, std::string treename, std::string system, float sqrtSnn) = 0;
   virtual void WriteEvent(qaEvent* event) = 0;
   virtual void WriteParticle(qaParticle* particle) = 0;
   virtual void WriteTree() = 0;