Document inconsistent behaviour of :include_blank option
Document inconsistent behaviour of :include_blank option

paulodiovani/formtastic,thenthen8515/formtastic,ConferenceCloud/formtastic,mikz/formtastic,Guestfolio/formtastic,mikz/formtastic,ConferenceCloud/formtastic,nishaya/formtastic,justinfrench/formtastic,justinfrench/formtastic,EndingChaung/formtastic,ryanfox1985/formtastic,paulodiovani/formtastic,ryanfox1985/formtastic,Davidzhu001/formtastic,thenthen8515/formtastic,Baltazore/formtastic,Davidzhu001/formtastic,nishaya/formtastic,justinfrench/formtastic,ryanfox1985/formtastic,Guestfolio/formtastic,EndingChaung/formtastic,sideci-sample/sideci-sample-formtastic