Merge pull request #378 from minus5/master

Adding gofreetds, MSSQL database driver.

README.md

@@ -206,6 +206,7 @@ Join us on IRC at **#awesome-go** on freenode [web access](http://webchat.freeno
     * [go-pgsql](https://github.com/lxn/go-pgsql) - A PostgreSQL client package for the Go Programming Language.
     * [go-sql-driver/mysql](https://github.com/go-sql-driver/mysql) - MySQL driver for Go.
     * [go-sqlite3](https://github.com/mattn/go-sqlite3) - SQLite3 driver for go that using database/sql.
+    * [gofreetds](https://github.com/minus5/gofreetds) Microsoft MSSQL driver. Go wrapper over [FreeTDS](http://www.freetds.org).
     * [pq](https://github.com/lib/pq) - Pure Go Postgres driver for database/sql.
 
 * NoSQL Databases