Fixed: restore load(string) and unload()

Fixes #1

index.js

@@ -17,7 +17,7 @@ function trackLoading(image, src) {
 export default function load(image) {
 	// if argument is an array, treat as
 	// load(['1.jpg', '2.jpg'])
-	if (image.length !== undefined) {
+	if (typeof image !== 'string' && image.length !== undefined) {
 		return Promise.all([].map.call(image, load));
 	}
 
@@ -34,14 +34,14 @@ export default function load(image) {
 }
 
 load.unload = function (image) {
-	if (!image.src) {
+	if (image.src) {
 		// an <img> was passed as argument, so nothing to unload
 		return;
 	}
 
 	// if argument is an array, treat as
 	// load(['1.jpg', '2.jpg'])
-	if (image.length !== undefined) {
+	if (typeof image !== 'string' && image.length !== undefined) {
 		[].map.call(image, load.unload);
 	} else if (load[image]) {
 		// GC, http://www.fngtps.com/2010/mobile-safari-image-resource-limit-workaround/

package.json

@@ -4,7 +4,7 @@
   "description": "Load an image and return a promise in the browser, in 0.3KB",
   "license": "MIT",
   "repository": "bfred-it/image-promise",
-  "author": "Federico Brigante <bfred-it@users.noreply.github.com> (twitter.com/bfred_it)",
+  "author": "Federico Brigante <github@bfred.it> (bfred.it)",
   "keywords": [
     "browser",
     "image",