Update README

README.md

@@ -4,6 +4,16 @@ This set of rules serves to remove Sorbet from a codebase.
 
 I like Sorbet a lot! But sometimes, I need to remove it from a codebase.
 
+I use it to remove Sorbet type definitions in the gems I ship.
+
+## Note!!!
+
+* This gem does not cover all use-cases.
+* This gem hasn't been tested very thoroughly.
+* This gem produces ugly code. I recommend running your regular linter after.
+* Please use version control! Please remember to commit your changes!
+* Please run your tests to make sure your code is still okay!
+
 ## Installation
 
 Install the gem and add to the application's Gemfile by executing:
@@ -12,17 +22,46 @@ Install the gem and add to the application's Gemfile by executing:
 
 ## Usage
 
-Put this into your `.rubocop.yml`.
+I strongly recommend that you use version control and commit all your changes
+before using this gem. This gem edits your code, and honestly it isn't tested
+too well.
+
+Here's an example of how to run this and automatically remove all instances of
+Sorbet:
+
+```bash
+bundle exec rubocop \
+    --require rubocop-no_sorbet --only NoSorbet --autocorrect \
+    app lib exe *.gemspec
+```
+
+Optionally, you can create a configuration file:
 
 ```yaml
+# Name this file `.rubocop_no_sorbet.yml`
+---
 require:
   - rubocop-no_sorbet
+
+AllCops:
+  DisabledByDefault: true
+  Exclude:
+    - bin/**/*
+    - test/**/*
+  Include:
+    - app/**/*.rb
+    - exe/**/*
+    - lib/**/*.rb
+    - '*.gemspec'
+
+NoSorbet:
+  Enabled: Yes
 ```
 
-You can also specify this at runtime.
+You can then run the slightly shorter:
 
 ```bash
-rubocop --require rubocop-no_sorbet
+bundle exec rubocop --config .rubocop_no_sorbet.yml --autocorrect
 ```
 
 ## Development