Regenerate gemspec for version 1.3.0
Regenerate gemspec for version 1.3.0

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