Merge pull request github#101 from github/remove-legacy-config

Delete legacy config

Gemfile.lock

@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     rubocop-github (0.17.0)
-      rubocop
+      rubocop (>= 1.0.0)
       rubocop-performance
       rubocop-rails
 
@@ -48,7 +48,7 @@ GEM
     rake (13.0.6)
     regexp_parser (2.2.0)
     rexml (3.2.5)
-    rubocop (1.25.0)
+    rubocop (1.25.1)
       parallel (~> 1.10)
       parser (>= 3.1.0.0)
       rainbow (>= 2.2.2, < 4.0)

README.md

@@ -4,28 +4,6 @@ This repository provides recommended RuboCop configuration and additional Cops f
 
 ## Usage
 
-Rubocop 0.68 removed performance cops and 0.72 removed Rails cops. However, upgrading `rubocop-github` without modification will almost definitely create very many new offenses. The current version of this gem exposes the "legacy" configuration under `config/default.yml` and `config/rails.yml` which should be used *if and only if* the version of rubocop is locked to `< 0.68` in your project (which it should be unless you `bundle update rubocop`). It also exposes an "edge" configuration under `config/default_edge.yml` and `config/rails_edge.yml` so that the changes can be tested without introducing breaking changes.
-
-### Legacy usage
-
-**Gemfile**
-
-``` ruby
-gem "rubocop", "< 0.68"
-gem "rubocop-github"
-```
-
-**.rubocop.yml**
-
-``` yaml
-inherit_gem:
-  rubocop-github:
-    - config/default.yml
-    - config/rails.yml
-```
-
-### Edge usage
-
 **Gemfile**
 
 ``` ruby
@@ -43,6 +21,11 @@ inherit_gem:
     - config/rails_edge.yml
 ```
 
+### Legacy usage
+
+If you are using a rubocop version < 1.0.0, you can use rubocop-github version
+0.16.2 (see the README from that version for more details).
+
 ## Testing
 
 `bundle install`