Fix formatting and copyright in median.h

Author: nathan-russell

inst/include/Rcpp/sugar/functions/median.h

@@ -1,9 +1,8 @@
-// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
+// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
 //
 // median.h: Rcpp R/C++ interface class library -- median
 //
-// Copyright (C) 2012 - 2013 Dirk Eddelbuettel and Romain Francois
-// Copyright (C) 2016 - Nathan Russell 
+// Copyright (C) 2016 Dirk Eddelbuettel, Romain Francois, and Nathan Russell
 //
 // This file is part of Rcpp.
 //