simplified if statements

src/vegas.js

@@ -91,11 +91,11 @@
             'kenburnsDown', 'kenburnsDownLeft', 'kenburnsDownRight'
         ];
 
-        if (this.settings.transitionRegister instanceof Array === false) {
+        if (!this.settings.transitionRegister instanceof Array) {
             this.settings.transitionRegister = [ this.settings.transitionRegister ];
         }
 
-        if (this.settings.animationRegister instanceof Array === false) {
+        if (!this.settings.animationRegister instanceof Array) {
             this.settings.animationRegister = [ this.settings.animationRegister ];
         }
 
@@ -259,7 +259,7 @@
                 return videoCache[cacheKey];
             }
 
-            if (srcs instanceof Array === false) {
+            if (!srcs instanceof Array) {
                 srcs = [ srcs ];
             }
 
@@ -541,11 +541,7 @@
         },
 
         _end: function () {
-            if (this.settings.autoplay) {
-                this.ended = false;
-            } else {
-                this.ended = true;
-            }
+            this.ended = !this.settings.autoplay;
             this._timer(false);
             this.trigger('end');
         },