Fix issue #1.  Only change slides when arrow keys are used with no modifier keys
Fix issue #1.  Only change slides when arrow keys are used with no modifier keys

jvillarejo/continuous-integration-presentation,twobraids/presentations,briancavalier/slides,davidBearinTokyo/slides,unscriptable/e4e-2013-es6,avoidwork/do_you_even_mobile,davidBearinTokyo/slides,avoidwork/do_you_even_mobile,birthdayalex/slides,twobraids/slides,asolove/jsconf-2013-slides,jvillarejo/continuous-integration-presentation,briancavalier/slides,birthdayalex/slides,twobraids/socorro-presentation,unscriptable/e4e-2013-es6