Update README.md

Added output directory and link to Oracle built VM from OTN in README.md for
Where do I get the pre built output .ova from this build?  asked in issue #2

Author: bamcgill

README.md

@@ -49,6 +49,12 @@ update servers. optional export to export the ova.
 
 ![packer build](images/packerbuild.png)
 
+Output Directory
+----------------
+
+After building you can find the built OVA in the output directory.
+If you want the Oracle prebuilt OVA you can find it on Oracle Technology Network (OTN) [here](http://www.oracle.com/technetwork/database/enterprise-edition/databaseappdev-vm-161299.html)
+
 Build Structure
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