Update ink.css
Update ink.css

Allow paragraphs to be center-aligned
zurb/foundation-emails,faustgertz/sassy-ink,faustgertz/sassy-ink,bradbergeron-us/ink,Smartmessages/foundation-emails,TomiS/sassy-ink,jsit/foundation-emails,diego3/ink,PeoplePerHour/ink,industrydive/sassy-ink,jsit/foundation-emails,PeoplePerHour/ink,aris-b/ink,Stadly/foundation-emails,struankl/foundation-emails,Stadly/foundation-emails,alvaropag/ink,faustgertz/sassy-ink,arnaudgaudin/ink,ms425/ink,Smartmessages/foundation-emails,celsoyh/ink-1,fengyiyi/ink-1,rememberlenny/ink,bradbergeron-us/ink,struankl/foundation-emails,Stadly/foundation-emails,jsit/foundation-emails,istvan-ujjmeszaros/html-email-toolset,arnaudgaudin/ink,TomiS/sassy-ink,jsit/foundation-emails,Stadly/foundation-emails,struankl/foundation-emails,zurb/ink,industrydive/sassy-ink,aris-b/ink,fengyiyi/ink-1,TomiS/sassy-ink,zurb/foundation-emails,zurb/foundation-emails,diego3/ink,rememberlenny/ink,zurb/ink,struankl/foundation-emails,alvaropag/ink,celsoyh/ink-1,zurb/foundation-emails,ms425/ink,industrydive/sassy-ink,istvan-ujjmeszaros/html-email-toolset