Folly will track master

Summary: OSS used an older release and our code base got updated to some new folly api which was added few days back, so it broke OSS. So this diff will track Folly to master

Reviewed By: danielbuechele

Differential Revision: D8385398

fbshipit-source-id: 9be9a1313b1488fa8b1ca1f681010d0ff7819414

iOS/third-party-podspecs/Folly.podspec

@@ -1,12 +1,12 @@
 Pod::Spec.new do |spec|
   spec.name = 'Folly'
-  spec.version = '2018.05.28.00'
+  spec.version = '1.0.0'
   spec.license = { :type => 'Apache License, Version 2.0' }
   spec.homepage = 'https://github.com/facebook/folly'
   spec.summary = 'An open-source C++ library developed and used at Facebook.'
   spec.authors = 'Facebook'
   spec.source = { :git => 'https://github.com/facebook/folly.git',
-                  :tag => "v#{spec.version}" }
+                  :branch => "master" }
   spec.module_name = 'folly'
   spec.dependency 'boost-for-react-native'
   spec.dependency 'DoubleConversion'