Update StoreWatchMixin docs
Update StoreWatchMixin docs

See #93

andrewslater/fluxxor,STRML/fluxxor,VincentHoang/fluxxor,davesag/fluxxor,dantman/fluxxor,davesag/fluxxor,BinaryMuse/fluxxor,demiazz/fluxxor,nagyistoce/fluxxor,chimpinano/fluxxor,STRML/fluxxor,alcedo/fluxxor,davesag/fluxxor,hoanglamhuynh/fluxxor,dantman/fluxxor,hoanglamhuynh/fluxxor,hoanglamhuynh/fluxxor,dantman/fluxxor,chimpinano/fluxxor,VincentHoang/fluxxor,SqREL/fluxxor,webcoding/fluxxor,chimpinano/fluxxor,vsakaria/fluxxor,nagyistoce/fluxxor,thomasboyt/fluxxor,nagyistoce/fluxxor