Guests can enjoy any scoop of ice cream for $1.31 and Two-Scoop Sundaes for $3.31 on Thursday, December 31 at participating Baskin-Robbins shops nationwide CANTON, Mass., 2015-12-30 — /EPR Retail News/ — Baskin-Robbins, the world’s largest chain of ice cream specialty shops, is ringing in 2016 with its “Celebrate 31” promotion. On Thursday, December 31, ice cream…