Update how-to-cite.md

Adding how to acknowledge TACC

Author: cockerilltim

user-guide/how-to-cite.md

@@ -2,10 +2,14 @@
 
 ## Citing DesignSafe in Publications
 
-DesignSafe has published a marker paper that you can cite as a reference:
+Recognizing your use of DesignSafe in your research publications and presentations is vital for our continued funding. DesignSafe has published a marker paper that you can cite as a reference:
 
 Rathje, E., Dawson, C. Padgett, J.E., Pinelli, J.-P., Stanzione, D., Adair, A., Arduino, P., Brandenberg, S.J., Cockerill, T., Dey, C., Esteva, M., Haan, Jr., F.L., Hanlon, M., Kareem, A., Lowes, L., Mock, S., and Mosqueda, G. 2017. "DesignSafe: A New Cyberinfrastructure for Natural Hazards Engineering," ASCE Natural Hazards Review, doi:10.1061/(ASCE)NH.1527-6996.0000246.
 
 ## Additional Citation Information
 
-For additional information about citing DesignSafe, including how to cite specific data sets and tools, please contact the DesignSafe team or refer to our comprehensive documentation.
+If you receive HPC allocations for use in your computational research, in addition to citing DesignSafe per the marker paper please use the following acknowledgement:
+
+<i>The authors acknowledge the Texas Advanced Computing Center (TACC) at The University of Texas at Austin for providing computational resources that have contributed to the research results reported within this paper. URL: http://www.tacc.utexas.edu</i>
+
+For additional information about citing DesignSafe, including how to cite specific data sets and tools, [please contact the DesignSafe team](https://designsafe-ci.org/help/new-ticket/).