Add example of usage

Signed-off-by: Gianpaolo Macario <[email protected]>

build-yocto-genivi/run-gocd-agent.sh

@@ -1,5 +1,17 @@
 #!/bin/bash
+
+# ===========================================================================
+# Project: gmacario/easy-build
+#
 # Run as a GoCD Agent
+#
+# Example of usage
+#
+# $ docker run -d --user=go \
+#   --hostname my-genivigo-testagent \
+#   --workdir /var/lib/go-agent \
+#   gmacario/build-yocto-genivi /usr/local/bin/run-gocd-agent.sh
+# ===========================================================================
 
 # set -x
 set -e