Documented availability of 'auth' tag

Change-Id: I06ffd3a9237df881986967376d81d11e9c9f4f98
diff --git a/README.rst b/README.rst
index c027b1a..f00ce6c 100644
--- a/README.rst
+++ b/README.rst
@@ -16,6 +16,7 @@
   run_tests.sh --nova
   run_tests.sh --glance
   run_tests.sh --swift
+  run_tests.sh --auth
 
 
 Additional Info
diff --git a/kong/run_tests.sh b/kong/run_tests.sh
index 96c2406..f666fbd 100755
--- a/kong/run_tests.sh
+++ b/kong/run_tests.sh
@@ -8,9 +8,10 @@
   echo "  -N, --no-virtual-env     Don't use virtualenv.  Run tests in local environment"
   echo "  -f, --force              Force a clean re-build of the virtual environment. Useful when dependencies have been added."
   echo "  -p, --pep8               Just run pep8"
-  echo "  --nova		   Run all tests tagged as \"nova\"."
-  echo "  --swift		   Run all tests tagged as \"swift\"."
-  echo "  --glance		   Run all tests tagged as \"glance\"."
+  echo "  --nova                   Run all tests tagged as \"nova\"."
+  echo "  --swift                  Run all tests tagged as \"swift\"."
+  echo "  --glance                 Run all tests tagged as \"glance\"."
+  echo "  --auth                   Run all tests tagged as \"auth\"."
   echo "  -h, --help               Print this usage message"
   echo ""
   echo "Note: with no options specified, the script will try to run the tests in a virtual environment,"
@@ -29,6 +30,7 @@
     --nova) noseargs="$noseargs -a tags=nova";;
     --glance) noseargs="$noseargs -a tags=glance";;
     --swift) noseargs="$noseargs -a tags=swift";;
+    --auth) noseargs="$noseargs -a tags=auth";;
     *) noseargs="$noseargs $1"
   esac
 }