Update databases.md

Author: GenomicaMicrob

databases/databases.md

@@ -8,3 +8,5 @@ Available databases are:
 - RDP ver. 11.5
 ### 18S
 - Protista ver. 4.5
+
+We recommend getting the [EzBioCloud](http://www.ezbiocloud.net/resources/pipelines) curated database, but since it is not publicly available (although it is free for academia), we cannot distributed it. If you get it, then you´ll have to formatted accordingly. You can use our script [db_reformatter.sh](https://github.com/GenomicaMicrob/db_reformatter).