make fragment.bind() and unbind() chainable
make fragment.bind() and unbind() chainable

squaredup/ractive,pingjiang/ractive,JonDum/ractive,ISNIT0/ractive,cgvarela/ractive,cgvarela/ractive,thomsbg/ractive,ractivejs/ractive,thomsbg/ractive,ISNIT0/ractive,marcalexiei/ractive,ndimas/ractive,ndimas/ractive,cgvarela/ractive,marcalexiei/ractive,marcalexiei/ractive,squaredup/ractive,pingjiang/ractive,magicdawn/ractive,JonDum/ractive,pingjiang/ractive,ISNIT0/ractive,magicdawn/ractive,ractivejs/ractive,ndimas/ractive,thomsbg/ractive,JonDum/ractive,squaredup/ractive,ractivejs/ractive,magicdawn/ractive