Update NIST license text

References:
* usnistgov/opensource-repo#17

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

LICENSE

@@ -0,0 +1,35 @@
+# NIST Software Licensing Statement
+
+NIST-developed software is provided by NIST as a public service.
+You may use, copy, and distribute copies of the software in any
+medium, provided that you keep intact this entire notice. You may
+improve, modify, and create derivative works of the software or
+any portion of the software, and you may copy and distribute such
+modifications or works. Modified works should carry a notice
+stating that you changed the software and should note the date
+and nature of any such change. Please explicitly acknowledge the
+National Institute of Standards and Technology as the source of
+the software.
+
+NIST-developed software is expressly provided "AS IS." NIST MAKES
+NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED, IN FACT, OR ARISING BY
+OPERATION OF LAW, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
+NON-INFRINGEMENT, AND DATA ACCURACY. NIST NEITHER REPRESENTS NOR
+WARRANTS THAT THE OPERATION OF THE SOFTWARE WILL BE UNINTERRUPTED
+OR ERROR-FREE, OR THAT ANY DEFECTS WILL BE CORRECTED. NIST DOES
+NOT WARRANT OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF THE
+SOFTWARE OR THE RESULTS THEREOF, INCLUDING BUT NOT LIMITED TO THE
+CORRECTNESS, ACCURACY, RELIABILITY, OR USEFULNESS OF THE
+SOFTWARE.
+
+You are solely responsible for determining the appropriateness of
+using and distributing the software and you assume all risks
+associated with its use, including but not limited to the risks
+and costs of program errors, compliance with applicable laws,
+damage to or loss of data, programs or equipment, and the
+unavailability or interruption of operation. This software is not
+intended to be used in any situation where a failure could cause
+risk of injury or damage to property. The software developed by
+NIST employees is not subject to copyright protection within the
+United States.