Adding the license.txt to the Kratos directory

kratos/license.txt

@@ -0,0 +1,20 @@
+Kratos Multi-Physics
+
+Copyright (c) 2015, Pooyan Dadvand, Riccardo Rossi, CIMNE (International Center for Numerical Methods in Engineering)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+	-	Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+	-	Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer 
+		in the documentation and/or other materials provided with the distribution.
+	-	All advertising materials mentioning features or use of this software must display the following acknowledgement: 
+			This product includes Kratos Multi-Physics technology.
+	-	Neither the name of the CIMNE nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED ANDON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 
+THE USE OF THISSOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.