fix: iOS CocoaPods

Author: jaybowang

ios/RNBackgroundDownload.podspec

@@ -0,0 +1,18 @@
+
+Pod::Spec.new do |s|
+  s.name         = 'react-native-background-downloader'
+  s.version      = '1.0.0'
+  s.summary      = 'React Native background downloader'
+  s.description  = <<-DESC
+  A library for React-Native to help you download large files on iOS and Android both in the foreground and most importantly in the background.
+                   DESC
+  s.author       = '[email protected]'
+  s.homepage     = 'https://github.com/EkoLabs/react-native-background-downloader'
+  s.license      = 'MIT'
+  s.platform     = :ios, '7.0'
+  s.source       = { git: 'https://github.com/EkoLabs/react-native-background-downloader.git', tag: 'master' }
+  s.source_files = 'ios/**/*.{h,m}'
+  s.requires_arc = true
+
+  s.dependency 'React'
+end