update readme with tile format and example URLs
update readme with tile format and example URLs
xvilan/tangram,taylorhxu/tangram,DHaylock/tangram,DHaylock/tangram,DHaylock/tangram,rosamcgee/tangram,rosamcgee/tangram,taylorhxu/tangram,taylorhxu/tangram,TitoAgudelo/tangram,zerebubuth/tangram,xvilan/tangram,tangrams/tangram,tangrams/tangram,zerebubuth/tangram,zerebubuth/tangram,ceseale/tangram,ceseale/tangram,ceseale/tangram,xvilan/tangram,rosamcgee/tangram,TitoAgudelo/tangram,TitoAgudelo/tangram