Add Console class.

src/App.h

@@ -28,6 +28,7 @@
 #include <uv.h>
 
 
+class Console;
 class Network;
 class Options;
 
@@ -48,6 +49,7 @@ private:
 
   static App *m_self;
 
+  Console *m_console;
   Network *m_network;
   Options *m_options;
   uv_signal_t m_signal;