added twitter account to the readme
added twitter account to the readme

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