Merge pull request #734 from LLNL/update-ref

Update ref

README.md

@@ -7,8 +7,7 @@
 [comment]: # (# SPDX-License-Identifier: BSD-3-Clause)
 [comment]: # (#################################################################)
 
-RAJA 
-============
+# <img src="/share/raja/logo/RAJA_LOGO_Color.png?raw=true" width="128" valign="middle" alt="RAJA"/>
 
 [![Build Status](https://travis-ci.org/LLNL/RAJA.svg?branch=develop)](https://travis-ci.org/LLNL/RAJA)
 [![Join the chat at https://gitter.im/llnl/raja](https://badges.gitter.im/llnl/raja.svg)](https://gitter.im/llnl/raja?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
@@ -79,7 +78,7 @@ To cite RAJA, please use the following references:
 
 * RAJA Performance Portability Layer. https://github.com/LLNL/RAJA
 
-* R. Hornung, H. Jones, J. Keasler, R. Neely, O. Pearce, S. Hammond, C. Trott, P. Lin, C. Vaughan, J. Cook, R. Hoekstra, B. Bergen, J. Payne, G. Womeldorff. ASC Tri-lab Co-design Level 2 Milestone Report 2015, Tech Report, LLNL-TR-677453, Sep. 2015.
+* D. A. Beckingsale, J. Burmark, R. Hornung, H. Jones, W. Killian, A. J. Kunen, O. Pearce, P. Robinson, B. S. Ryujin, T. R. W. Scogland, "RAJA: Porrtable Performance for Large-Scale Scientific Applications", 2019 IEEE/ACM International Workshop on Performance, Portability and Productivity in HPC (P3HPC). [Download here](https://conferences.computer.org/sc19w/2019/#!/toc/14)
 
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