Fixed typo.
Formatting changes, new methods on MDMPersistenceController.
Applied comments from previous PR.
Added deletion example.
Added example for executefetchrequest:error
Added tests and applied PR comments.
Code formatting cleanup.
Merge branch 'pr1'
Removed useless GIF.
Added contributing section to README.
Added NSManagedObject category.
Updated author information.
Merge pull request #2 from mmorey/NSManagedObject_Category

Added NSManagedObject category.
Fixed broken NSManagedObject category link.
Clearified installation instructions.
Fixed typos.
Using fenced code blocks for improved syntax.
englishification
Merge pull request #5 from sallyransom/patch-1

englishification