Regenerate gemspec for version 0.3.0
Regenerate gemspec for version 0.3.0

11factory/datagrid,sadaf2605/datagrid,bogdan/datagrid,artofhuman/datagrid,jeanlinux/datagrid,artofhuman/datagrid,bogdan/datagrid,jeanlinux/datagrid,sadaf2605/datagrid,reenhanced/datagrid,reenhanced/datagrid