Added to readme

Samo Penic

2018-05-19 333af088d519ca1736791702d95722abf6d86a01

 src/energy.c

@@ -238,3 +238,7 @@
   return vesicle->tape->F*ddp;      
   
}

void stretchenergy(ts_vesicle *vesicle, ts_triangle *triangle){
   triangle->energy=vesicle->tape->xkA0/vesicle->tlist->n/2*pow((triangle->area/vesicle->tlist->a0-1),2);
}