Added a read me, mostly from the blog post
Added a read me, mostly from the blog post

pventura1976/BlockAlertsAnd-ActionSheets,rchampourlier/SRAlertsAndActionSheets,gpambrozio/BlockAlertsAnd-ActionSheets,taymer/BlockAlertsAnd-ActionSheets,luiseduardohdbackup/BlockAlertsAnd-ActionSheets,sanghavan/BlockAlertsAnd-ActionSheets,binarydev/BlockAlertsAnd-ActionSheets