Clarify use_framework! workaround usage

README.md

 By default no permission handler is installed. Update your `Podfile` by choosing the ones you want to check or request, then run `pod install`.
 
 ```ruby
-# if you have prebuild dynamic cocoapods dependencies and could not migrate
-# to use_modular_headers you should use workaround for linking app with dynamic frameworks
-# and with static libraries by placing this code at the top of Podfile
-# 
-# Add this code at the top of Podfile right after platform definition
-use_frameworks!
-
-dynamic_frameworks = ['RxCocoa', 'RxSwift', 'WhatEverSDKName']
-
-# make all the other dependencies into static libraries by overriding the static_library
-pre_install do |installer|
-    installer.pod_targets.each do |pod|
-        if !dynamic_frameworks.include?(pod.name)
-            puts "Overriding the static_library for #{pod.name}"
-            def pod.build_type;
-              Pod::Target::BuildType.static_library
-              # for static framework -
-              # Pod::Target::BuildType.static_framework
-            end
-        end
-    end
-end
-```
-
-```ruby
-# 🚨 If you use use_framework! 🚨
-# - Ensure that you have installed at least Cocoapods 1.5.0
-# - Replace use_framework! with use_modular_headers!
-# (see http://blog.cocoapods.org/CocoaPods-1.5.0 for more details)
-
 target 'YourAwesomeProject' do
 
   # …
 end
 ```
 
-_⚠️ If you encounter the error `Invalid RNPermission X. Should be one of: ()`, first check that you link at least one permission handler. If you did, try to cleanup Xcode junk data with `npx react-native-clean-project --remove-iOS-build --remove-iOS-pods`_
+#### ⚠️ If you encounter the error `Invalid RNPermission X. Should be one of: ()`
+
+1. Check that you linked **at least one** permission handler.
+2. Clean up Xcode stale data with `npx react-native-clean-project --remove-iOS-build --remove-iOS-pods`
+3. If you use `use_frameworks!`, replace it by `use_modular_headers!` - see [this blog post](http://blog.cocoapods.org/CocoaPods-1.5.0) for more details
+4. If you use `use_frameworks!` but **can't** replace it with `use_modular_headers!`, check the following workaround:
+
+```ruby
+# Add this code at the top of Podfile right after platform definition.
+# It will make all the dynamic frameworks turning into static libraries.
+
+use_frameworks!
+
+$dynamic_frameworks = ['RxCocoa', 'RxSwift', 'WhatEverSDKName']
+
+pre_install do |installer|
+  installer.pod_targets.each do |pod|
+    if !$dynamic_frameworks.include?(pod.name)
+      puts "Overriding the static_framework? method for #{pod.name}"
+      def pod.build_type;
+        Pod::Target::BuildType.static_library
+      end
+    end
+  end
+end
+```
 
 Then update your `Info.plist` with wanted permissions usage descriptions:
 

example/ios/Podfile

 platform :ios, '9.0'
 
-# if you have prebuild dynamic cocoapods dependencies and could not migrate
-# to use_modular_headers you should use workaround for linking app with dynamic frameworks
-# and with static libraries by uncommenting next code
+# If you use `use_frameworks!` but can't replace it with `use_modular_headers!`,
+# you can make all the dynamic frameworks turning into static libraries.
 
 # use_frameworks!
-# dynamic_frameworks = []
+# $dynamic_frameworks = []
+
 # pre_install do |installer|
-#   # make all the other libraries into static frameworks by overriding the static_library
-#     installer.pod_targets.each do |pod|
-#         if !dynamic_frameworks.include?(pod.name)
-#             puts "Overriding the static_framework? method for #{pod.name}"
-#             def pod.build_type;
-#               Pod::Target::BuildType.static_library
-#             end
-#         end
+#   #
+#   installer.pod_targets.each do |pod|
+#     if !$dynamic_frameworks.include?(pod.name)
+#       puts "Overriding the static_framework? method for #{pod.name}"
+#       def pod.build_type;
+#         Pod::Target::BuildType.static_library
+#       end
 #     end
+#   end
 # end
 
 require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'