Update README.md

README.md

@@ -27,4 +27,8 @@ parishcm@ornl.gov<br>
 tested on Anaconda Python 3.6.8 and 3.7<br>
 Matplotlib 3.0.x<br>
 <br>
-Tested on Windows 7, Windows 10, and Mac OS
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+Tested on Windows 7, Windows 10, and Mac OS
+<br>
+<br>
+### Acknowledgments<br>
+This work was supported by U.S. Department of Energy, Office of Science, Fusion Energy Sciences, under contract number DE-AC05-00OR22725.
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