Correct note about Retina scale factor
Use plural consistently
NSOperation's main is a method, not a function
The new property is asynchronous, not synchronous
that -> then
Remove redundant "block"
Insert apostrophe
Update 2013-01-07-nil.md

Typo fixed
Merge pull request #212 from valeriyvan/patch-1

Update 2013-01-07-nil.md
Removing dataDetectorTypes from WKWebViewConfiguration
[Issue #211] Fixing Objective-C typo
Merge pull request #208 from mikeabdullah/patch-1

Edits, get yer lovely fresh edits!
Merge pull request #197 from smileyborg/master

Correct note about Retina scale factor
Method signature fixed.
Merge pull request #213 from valeriyvan/patch-2

Method signature fixed.
Adding UIAlertController post
Minor copy editing
moved destroyAction from Alert View example to Action Sheet example
Merge pull request #214 from pbodsk/master

moved destroyAction from Alert View example to Action Sheet example
AVMakeRectWithAspectRatioInsideRect returns CGRect

AVMakeRectWithAspectRatioInsideRect returns a `CGRect` rather than `CGSize`. I changed the name of the variable to avoid confusion.