From Sergey Trepalin: Add in a template for cocaine.

obabel -:"CN1[C@H]2CC[C@@H]1[C@@H](C(OC)=O)[C@@H](OC(C3=CC=CC=C3)=O)C2" -O cocaine.svg -d -xC
Merge pull request #45 from baoilleach/depictiontemplate

From Sergey Trepalin: Add in a template for cocaine.