Add FreeSql link to documentation.

Author: luoyunchong

docs/content/overview/use-with-orms.md

@@ -14,6 +14,7 @@ Use with ORMs
 This library is compatible with popular .NET ORMs including:
 
 * [Dapper](https://stackexchange.github.io/Dapper/) ([GitHub](https://github.com/StackExchange/dapper-dot-net), [NuGet](https://www.nuget.org/packages/Dapper))
+* [FreeSql](http://freesql.net/) ([GitHub](https://github.com/dotnetcore/FreeSql), [NuGet](https://www.nuget.org/packages/FreeSql.Provider.MySqlConnector/))
 * [LINQ to DB](https://linq2db.github.io) ([GitHub](https://github.com/linq2db/linq2db), [NuGet](https://www.nuget.org/packages/linq2db.MySqlConnector))
 * [NHibernate](https://www.nhibernate.info) ([GitHub](https://github.com/nhibernate/NHibernate.MySqlConnector), [NuGet](https://www.nuget.org/packages/NHibernate.Driver.MySqlConnector))
 * [NReco.Data](https://www.nrecosite.com/dalc_net.aspx) ([GitHub](https://github.com/nreco/data), [NuGet](https://www.nuget.org/packages/NReco.Data))