Added LICENSE to the repository.

LICENSE

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+Copyright (c) 2014, Battelle Memorial Institute
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. 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.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OWNER OR CONTRIBUTORS 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 AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+
+
+This material was prepared as an account of work sponsored by an
+agency of the United States Government.  Neither the United States
+Government nor the United States Department of Energy, nor Battelle,
+nor any of their employees, nor any jurisdiction or organization
+that has cooperated in the development of these materials, makes
+any warranty, express or implied, or assumes any legal liability
+or responsibility for the accuracy, completeness, or usefulness or
+any information, apparatus, product, software, or process disclosed,
+or represents that its use would not infringe privately owned rights.
+
+Reference herein to any specific commercial product, process, or
+service by trade name, trademark, manufacturer, or otherwise does
+not necessarily constitute or imply its endorsement, recommendation,
+or favoring by the United States Government or any agency thereof,
+or Battelle Memorial Institute. The views and opinions of authors
+expressed herein do not necessarily state or reflect those of the
+United States Government or any agency thereof.
+
+PACIFIC NORTHWEST NATIONAL LABORATORY
+operated by BATTELLE for the UNITED STATES DEPARTMENT OF ENERGY
+under Contract DE-AC05-76RL01830