corrected wrong quotation marks in bower.json file which caused build to fail

Author: fresa

bower.json

@@ -9,17 +9,17 @@
         "url": "git://github.com/FredrikSandell/angular-workers"
     },
     "ignore": [
-        'src',
-        'test',
-        '.bowerrc',
-        '.gitignore',
-        '.jshintrc',
-        '.travis.yml',
-        '.editorconfig',
-        'bower.json',
-        'Gruntfile.js',
-        'package.json',
-        'karma.conf.js'
+        "src",
+        "test",
+        ".bowerrc",
+        ".gitignore",
+        ".jshintrc",
+        ".travis.yml",
+        ".editorconfig",
+        "bower.json",
+        "Gruntfile.js",
+        "package.json",
+        "karma.conf.js"
     ],
     "dependencies": {
         "angular": "~1.3.*"