Updated the license file

LICENSE

@@ -1,18 +1,13 @@
-oltpbenchmark.com
-
-Project Info:  http://oltpbenchmark.com
-Project Members:  	
-					Carlo Curino <carlo.curino@gmail.com>
-					Evan Jones <ej@evanjones.ca>
-					DIFALLAH Djellel Eddine <djelleleddine.difallah@unifr.ch>			
-					Andy Pavlo <pavlo@cs.brown.edu>
-					CUDRE-MAUROUX Philippe <philippe.cudre-mauroux@unifr.ch>  
-					Yang Zhang <yaaang@gmail.com> 
-
-This library 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 3.0 of the License, or (at your option) any later version.
+Copyright 2015 by OLTPBenchmark Project
 
-This library 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 Lesser General Public License for more details.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.