Add podspec

Author: johannth

react-native-webgl.podspec

@@ -0,0 +1,20 @@
+require 'json'
+
+package = JSON.parse(File.read(File.join(__dir__, 'package.json')))
+
+Pod::Spec.new do |s|
+  s.name                = package['name']
+  s.version             = package['version']
+  s.summary             = package['description']
+  s.homepage            = 'https://github.com/react-community/react-native-webgl'
+  s.license             = package['license']
+  s.author              = package['author']
+  s.source              = { :git => 'https://github.com/react-community/react-native-webgl.git', :tag => "v#{package['version']}" }
+  s.requires_arc        = true
+  s.platform            = :ios, '10.0'
+  s.pod_target_xcconfig = { 'ENABLE_BITCODE' => 'NO' }
+  s.source_files        = 'ios/*.{h,m}','cpp/*.{h,c,cpp,mm}'
+  s.framework           = 'OpenGLES'
+  s.dependency          'GPUImage'
+  s.dependency          'React'
+end