better handling of ci env flag

Author: radoslawrolka

FabricExample/ios/Podfile

@@ -6,7 +6,7 @@ require Pod::Executable.execute_command('node', ['-p',
   )', __dir__]).strip
 
 # Use RNRepo in CI builds
-if ENV['CI'] == 'true'
+if %w[1 true].include?(ENV['CI'].to_s.downcase)
   require Pod::Executable.execute_command('node', ['-p',
     'require.resolve(
       "@rnrepo/build-tools/cocoapods-plugin/lib/plugin.rb",
@@ -39,7 +39,7 @@ target 'FabricExample' do
   )
 
   post_install do |installer|
-    if ENV['CI'] == 'true'
+    if %w[1 true].include?(ENV['CI'].to_s.downcase)
       rnrepo_post_install(installer)
     end
     react_native_post_install(