Fix assumption function

Author: Philipp Alferov

README.md

@@ -1,6 +1,6 @@
 angular-file-saver
 =========
-Angular file saver is an AngularJS service that provides integration of [FileSaver.js](https://github.com/eligrey/FileSaver.js/) that implements the
+Angular file saver is an AngularJS service that provides integration between  [FileSaver.js](https://github.com/eligrey/FileSaver.js/) and AngularJS. FileSaver.js implements the
 HTML5 W3C saveAs() FileSaver interface in browsers that do not natively support
 it. The package also comes with [Blob.js](https://github.com/eligrey/Blob.js/)
 as a dependency to provide support of wide range of browsers.

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "angular-file-saver",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "main": [
     "src/file-saver.js"
   ],

src/file-saver.js

@@ -15,7 +15,7 @@
     .module('fileSaver', [])
     .factory('SaveAs', [SaveAs]);
 
-    function SaveAs () {
+    function SaveAs() {
       function blobInit(data, type) {
         var blob;
 
@@ -30,23 +30,11 @@
         return blob;
       }
 
-      function isBlobInstance(data) {
-        var blobSupport = hasBlobSupport();
-
-        if (blobSupport && data instanceof Blob) {
-          return true;
-        }
-
-        //If browser does not suport Blob natively, but the object passed as
-        //first argument represented as BlobBuilder polyfill instance
-        if (!blobSupport && data instanceof BlobBuilder) {
-          return true;
-        }
-
-        return false;
+      function isBlobInstance (data) {
+          return data instanceof Blob || data instanceof BlobBuilder;
       }
 
-      function hasBlobSupport () {
+      function hasBlobSupport() {
         return typeof(Blob) === "function";
       }