Updating the list of contributions and contributors

CONTRIBUTORS.md

 Contributors to date (in chronological order, with current affiliations)
-- Ning Liu, IBM
-- Jason Cope, DDN
+- Ning Liu, Rensselaer Polytechnic Institute
+- Jason Cope, Argonne National Labs
 - Philip Carns, Argonne National Labs
 - Misbah Mubarak, Argonne National Labs
 - Shane Snyder, Argonne National Labs
-- Jonathan P. Jenkins
+- Jonathan P. Jenkins, Argonne National Labs
 - Noah Wolfe, RPI
-- Nikhil Jain, Nvidia
+- Nikhil Jain, Lawrence Livermore National Labs
 - Giorgis Georgakoudis, Lawrence Livermore Labs
 - Matthieu Dorier, Argonne National Labs
 - Caitlin Ross, RPI
-- Xu Yang, Amazon
+- Xu Yang, Illinois Institute of Tech.
 - Jens Domke, Tokyo Institute of Tech.
 - Xin Wang, IIT
+- Neil McGlohon, Rensselaer Polytechnic Institute
+- Elsa Gonsiorowski, Rensselaer Polytechnic Institute
+- Justin M. Wozniak, Argonne National Laboratory
+- Robert B. Ross, Argonne National Laboratory
+- Lee Savoie, Univ. of Arizona 
 
-Contributions of external (non-Argonne) collaborators:
+Contributions (listed in chronological order):
+
+Misbah Mubarak (ANL)
+    - Introduced 1-D dragonfly and enhanced torus network model.
+    - Added quality of service in dragonfly and megafly network models.
+    - Added MPI simulation layer to simulate MPI operations.
+    - Updated and merged burst buffer storage model with 2-D dragonfly.
+    - Added and validated 2-D dragonfly network model.
+    - Added multiple workload sources including MPI communication, Scalable
+      Workload Models, DUMPI communication traces.
+    - Added online simulation capability with Argobots and SWMs.
+    - Instrumented the network models to report time-stepped series statistics. 
+    - Bug fixes for network, storage and workload models with CODES.
+
+Neil McGlohon (RPI)
+    - Introduced Megafly network model.
+    - Merged 1-D dragonfly and 2-D dragonfly network models.
+    - Updated adaptive routing in megafly and 1-D dragonfly network models. 
 
 Nikhil Jain, Abhinav Bhatele (LLNL)
     - Improvements in credit-based flow control of CODES dragonfly and torus network models.
@@ -30,6 +52,11 @@ Jens Domke (U. of Dresden)
     - Static routing in fat tree network model including ground work for
       dumping the topology and reading the routing tables.
 
+John Jenkins 
+    - Introduced storage models in a separate codes-storage-repo.
+    - Enhanced the codes-mapping APIs to map advanced combinations on PEs.
+    - Bug fixing with network models.
+    - Bug fixing with MPI simulation layer.
 Xu Yang (IIT)
     - Added support for running multiple application workloads with CODES MPI
       Simulation layer, along with supporting scripts and utilities.
@@ -46,3 +73,6 @@ Caitlin Ross (RPI):
     - Added instrumentation so that network models can report sampled
       statistics over virtual time (pending).
     - Bug reporter for CODES models.
+
+Neil McGlohon (RPI):
+    - Added dragonfly plus network model