Adds description about various options available with the acts_as_list method
Adds description about various options available with the acts_as_list method

Improves message

fabn/acts_as_list,amitree/acts_as_list,joeadcock/acts_as_list,swanandp/acts_as_list,botandrose/acts_as_list,corwinstephen/acts_as_list,tinderfields/acts_as_list