Cosmetic information message for unit tests

Signed-off-by: David Decotigny <d2@maposmatic.org>

ocitysmap2/map_canvas.py

@@ -197,3 +197,5 @@ if __name__ == '__main__':
 
     canvas.render()
     mapnik.render_to_file(canvas.get_rendered_map(), '/tmp/mymap.png', 'png')
+
+    print "Generated /tmp/mymap.png"

ocitysmap2/renderers.py

@@ -540,3 +540,5 @@ if __name__ == '__main__':
     plain.canvas.render()
     plain.render(plain.create_rendering_session(surface, None))
     surface.finish()
+
+    print "Generated /tmp/plain.pdf"