ENH: volField test: comment

applications/test/volField/README.txt

-Test field reading and manipulation. Run on cavity subdirectory.
+Test field reading and manipulation.
+See cavity/Allrun in the subdirectory.

applications/test/volField/cavity/Allrun

+#!/bin/sh
+cd ${0%/*} || exit 1    # run from this directory
+
+# Source tutorial run functions
+. $WM_PROJECT_DIR/bin/tools/RunFunctions
+
+# Get application name
+application=Test-volField
+
+# Compile
+runApplication wmake ..
+
+runApplication blockMesh
+
+runApplication $application
+
+# ----------------------------------------------------------------- end-of-file