Add format-headers.sh, just to remind "mvn license:format"

diff --git a/format-headers.sh b/format-headers.sh
new file mode 100755 (executable)
index 0000000..9bf4d94
--- /dev/null
+++ b/format-headers.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+# Set correct copyright headers
+
+mvn license:format