Added a final LoaderTests unit test for the template attribute case.
Added a final LoaderTests unit test for the template attribute case.

rismalrv/pystache,nitish116/pystache,beni55/pystache,rismalrv/pystache,harsh00008/pystache,nitish116/pystache,rismalrv/pystache,beni55/pystache,jrnold/pystache,nitish116/pystache,jrnold/pystache,arlenesr28/pystache,defunkt/pystache,harsh00008/pystache,charbeljc/pystache,harsh00008/pystache,arlenesr28/pystache,arlenesr28/pystache,charbeljc/pystache