[ci skip] add io.js to readme

README.md

@@ -4,7 +4,7 @@
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-Sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server. It features solid transaction support, relations, read replication and more.
+Sequelize is a promise-based Node.js/io.js ORM for Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server. It features solid transaction support, relations, read replication and more.
 
 [Documentation](http://sequelize.readthedocs.org/en/latest/)