[FIX] Remove webkitStorageInfo is deprecated warning

Chrome always prints the warning:
```
'window.webkitStorageInfo' is deprecated. Please use 'navigator.webkitTemporaryStorage' or 'navigator.webkitPersistentStorage' instead.
```

Since this is distracting, this PR makes the warning disappear.
Merge pull request #151 from MajorBreakfast/patch-2

[FIX] Remove webkitStorageInfo is deprecated warning