FIX: add smoker to a table in a safe way
FIX: add smoker to a table in a safe way

Smokers were added chaning the state of the Table's smokers Array from
within the Smoker actor.

Table now can welcome smokers managing the smokers Array by itself.

dilumn/celluloid,davydovanton/celluloid,olleolleolle/celluloid,marshall-lee/celluloid,celluloid/celluloid,jstoja/celluloid,jasonm23/celluloid,sideci-sample/sideci-sample-celluloid,mehta/celluloid,seuros/celluloid,TiagoCardoso1983/celluloid,kenichi/celluloid