Set podspec version to be greater than zero

Summary:Cocoapods requires that the version should be greater than zero. So if you have your react-native dependency pointing to the master repo it will fail when you pod install.
Closes facebook#6381

Differential Revision: D3032151

fb-gh-sync-id: 0ba820b8e746e7f03e963f292ec8ccf55263dcc7
shipit-source-id: 0ba820b8e746e7f03e963f292ec8ccf55263dcc7

Author: greis

React.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name                = "React"
-  s.version             = "0.0.0-master"
+  s.version             = "0.0.1-master"
   s.summary             = "Build high quality mobile apps using React."
   s.description         = <<-DESC
                             React Native apps are built using the React JS