added comments

speedclock.ino

@@ -478,10 +478,13 @@ void update_screen(timer_state_e state){
     display.setCursor(64 - (display.strWidth(header_to_char) / 2), 0);
     display.print(header_to_char);
     display.setCursor(1,0);
+    //check if there is a connection to the topstation
     if(millis() - connection_established >= CONN_TIMEOUT || connection_established == 0){
+      //if not remove the "Y"
       display.print("  ");
     }
     else {
+      //if print the "Y"
       display.print("Y");
     }
     display.setCursor(0,1);