Include Yoga as a dependency in podfile to work with React Native 0.44 (#162)

Author: lmiller1990

Podfile

@@ -1,5 +1,6 @@
 platform :ios, '8.0'
 target 'AwesomeProject' do
+  pod 'Yoga', :path => '../node_modules/react-native/ReactCommon/yoga'
   pod 'React', :path => '../node_modules/react-native'
   pod 'react-native-sqlite-storage', :path => '../node_modules/react-native-sqlite-storage'
 end