Add note on preservation.

readme.mkd

@@ -85,7 +85,9 @@ the following address: <xer@multiphasicapps.net>.
    have a port of an existing virtual machine will usually only have an
    interpreter.
  * _To be compatible_ - So that existing Java ME 8 applications can run on this
-   virtual machine, along with J2ME applications when required.
+   virtual machine, along with J2ME applications when required. This has the
+   added bonus of allowing one to use older software to catalog for
+   preservation.
  * _To compile once and run anywhere_ - Current and up to date Java
    implementations are limited only to a few select systems (_Solaris_,
    _Linux_, _BSD_, _Mac OS X_, and _Windows_). Java ME 8 as of this writing