Merge pull request #640 from jjhursey/topic/update-README

README: Update links, and add paper citation

README

@@ -10,6 +10,7 @@ Copyright (c) 2004-2005 The Regents of the University of California.
                         All rights reserved.
 Copyright (c) 2006-2007 Cisco Systems, Inc.  All rights reserved.
 Copyright (c) 2006-2007 Sun Microsystems, Inc.  All rights reserved.
+Copyright (c) 2018      IBM Corporation.  All rights reserved.
 $COPYRIGHT$
 
 Additional copyrights may follow
@@ -87,6 +88,16 @@ The main (loose) requirements that we had for the MTT are:
   well-defined interface.
 
 
+How to cite this software
+-------------------------
+Hursey J., Mallove E., Squyres J.M., Lumsdaine A. (2007) An Extensible
+Framework for Distributed Testing of MPI Implementations. In Recent
+Advances in Parallel Virtual Machine and Message Passing Interface.
+EuroPVM/MPI 2007. Lecture Notes in Computer Science, vol 4757. Springer,
+Berlin, Heidelberg.
+https://doi.org/10.1007/978-3-540-75416-9_15
+
+
 Overview
 --------
 
@@ -123,7 +134,7 @@ configuration file is used to specify which MPI implementations to use
 and which tests to run.  
 
 The Open MPI Project uses MTT for nightly regression testing.  A
-sample client configuration file is included in
+sample Perl client configuration file is included in
 samples/perl/ompi-core-template.ini.  This template will require
 customization for each site's specific requirements.  It is also
 suitable as an example for organizations outside of the Open MPI
@@ -144,8 +155,8 @@ necessary.  See comments in the ompi-core-template.ini file for
 details.
 
 
-Running the MTT client
-----------------------
+Running the MTT Perl client
+---------------------------
 
 Having run the MTT client across several organizations within the Open
 MPI Project for quite a while, we have learned that even with common
@@ -190,10 +201,9 @@ testing software -- we do want to keep it somewhat focused on the
 needs and requires of testing MPI implementations.  As such, the usage
 flow is somewhat structured towards that bias.
 
-As of October 2007, we are finally ready for a public release.  But
-note that the software has been developed internally to the Open MPI
-project and will likely experience some growing pains while adjusting
-to a larger community.
+It should be noted that the software has been mostly developed internally
+to the Open MPI project and will likely experience some growing pains
+while adjusting to a larger community.
 
 
 License
@@ -221,14 +231,15 @@ [email protected] is considered different than
 [email protected]!).  Visit this page to subscribe to the
 user's list:
 
-     http://www.open-mpi.org/mailman/listinfo.cgi/mtt-users
+     https://lists.open-mpi.org/mailman/listinfo/mtt-users
 
 Developer-level bug reports, questions, and comments should generally
 be sent to the developer's mailing list ([email protected]).
 Please do not post the same question to both lists.  As with the
 user's list, only subscribers are allowed to post to the developer's
 list.  Visit the following web page to subscribe:
 
+     https://lists.open-mpi.org/mailman/listinfo/mtt-devel
      http://www.open-mpi.org/mailman/listinfo.cgi/mtt-devel
 
 When submitting bug reports to either list, be sure to include as much