fix dots & slide attr

Author: Wong Ho Chi Mark

src/slick.js

@@ -81,7 +81,7 @@ angular
               centerPadding: scope.centerPadding || '50px',
               cssEase: scope.cssEase || 'ease',
               customPaging: attr.customPaging ? customPaging : void 0,
-              dots: scope.dots === 'true',
+              dots: attr.dots || scope.dots === 'true',
               draggable: scope.draggable !== 'false',
               fade: scope.fade === 'true',
               focusOnSelect: scope.focusOnSelect === 'true',
@@ -96,7 +96,7 @@ angular
               respondTo: scope.respondTo != null ? scope.respondTo : 'window',
               responsive: scope.responsive || void 0,
               rows: scope.rows != null ? parseInt(scope.rows, 10) : 1,
-              slide: scope.slide || 'div',
+              slide: scope.slide || '',
               slidesPerRow: scope.slidesPerRow != null ? parseInt(scope.slidesPerRow, 10) : 1,
               slidesToShow: scope.slidesToShow != null ? parseInt(scope.slidesToShow, 10) : 1,
               slidesToScroll: scope.slidesToScroll != null ? parseInt(scope.slidesToScroll, 10) : 1,