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Update README.md
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zakkhoyt committed Jul 29, 2015
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### PHAsset+Utility
A category to simplify common PHAsset functions.

---

### Photos Permission
##### Note: This class assumes that you've already obtained permission from the user like so:
```
[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
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```
Looking for a solution for user permission prompting? Check out this framework:

####[VWWPermissionKit](https://github.com/zakkhoyt/VWWPermissionKit)
#####[VWWPermissionKit](https://github.com/zakkhoyt/VWWPermissionKit)

---

### About this category
```
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*/
-(void)requestMetadataWithCompletionBlock:(PHAssetMetadataBlock)completionBlock;
```

---

### Metadata

The metatdata dictionary returned from requestMetadataWithCompletionBlock will have subdictionaries broken into logical categories. Use Apple's ImageIO framework for parsing.
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