diff --git a/AUTHORS b/AUTHORS
index 4a841f813ede6727a53861037be7fbb8aed021b2..32597ffd146795656286b9528656ab013c519c30 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,2 +1,5 @@
-Pedro Gonnet: Main author.
-Matthieu Schaller: TBA.
+Pedro Gonnet            gonnet@google.com	
+Matthieu Schaller       matthieu.schaller@durham.ac.uk
+Aidan Chalk             aidan.chalk@durham.ac.uk
+Peter W. Draper         p.w.draper@durham.ac.uk
+Bert Vandenbrouck       bert.vandenbroucke@gmail.com
diff --git a/README b/README
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..279ee92eab9774e8e6a10d24283b79dfceb65bdb 100644
--- a/README
+++ b/README
@@ -0,0 +1,3 @@
+This is SWIFT. See INSTALL.swift for instructions.
+
+www.swiftsim.com
diff --git a/configure.ac b/configure.ac
index a3d38e86dfcc7bfaf94fc2a24d77b4441edc47f2..cbdbf5469bee0b3dec966e8c15955929d2445bec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -112,6 +112,9 @@ if test "$enable_mpi" = "yes"; then
 fi
 AM_CONDITIONAL([HAVEMPI],[test $enable_mpi = "yes"])
 
+# Indicate that MPIRUN can be modified by an environement variable
+AC_ARG_VAR(MPIRUN, Path to the mpirun command if non-standard)
+
 # Need C99 and inline support.
 AC_PROG_CC_C99
 AC_C_INLINE