Move podspec to root directory.

Summary: For our YogaKit sample project we want to add Cocoapods support and reference the local podspec. Unfortunately, this won't work unless the podspec lives in the root directory.

Reviewed By: emilsjolander

Differential Revision: D4507887

fbshipit-source-id: 919a8c8506768c90e50b3ae27deb51394db021e6

YogaKit/YogaKit.podspec

@@ -1,29 +0,0 @@
-podspec = Pod::Spec.new do |spec|
-  spec.name = 'YogaKit'
-  spec.version = '1.0.2'
-  spec.license =  { :type => 'BSD', :file => "LICENSE" }
-  spec.homepage = 'https://facebook.github.io/yoga/'
-  spec.documentation_url = 'https://facebook.github.io/yoga/docs/api/yogakit/'
-
-  spec.summary = 'Yoga is a cross-platform layout engine which implements Flexbox.'
-  spec.description = 'Yoga is a cross-platform layout engine enabling maximum collaboration within your team by implementing an API many designers are familiar with, and opening it up to developers across different platforms.'
-
-  spec.authors = 'Facebook'
-  spec.source = {
-    :git => 'https://github.com/facebook/yoga.git',
-    :tag => 'v2017.01.27.00',
-  }
-
-  spec.platform = :ios
-  spec.ios.deployment_target = '8.0'
-  spec.ios.frameworks = 'UIKit'
-
-  spec.dependency 'Yoga', '~> 1.0'
-  spec.source_files = 'YogaKit/Source/*.{h,m}'
-  spec.public_header_files = 'YogaKit/Source/{YGLayout,UIView+Yoga}.h'
-  spec.private_header_files = 'YogaKit/Source/YGLayout+Private.h'
-end
-
-# See https://github.com/facebook/yoga/pull/366
-podspec.attributes_hash["readme"] = "YogaKit/README.md"
-podspec