Added license.

src/sensBVP.cpp

@@ -1,3 +1,21 @@
+/*
+sensBVP: A program that calculates the sensitivity of ignition delay time to
+kinetic rate parameters by using a boundary value problem formulation.
+Copyright (C) 2019  Vyaas Gururajan
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+Street, Fifth Floor, Boston, MA  02110-1301, USA.
+*/
 #include <stdbool.h>
 #include <math.h>
 #include <stdio.h>