Deprecate rack_profiler:install in favour of rack_mini_profiler:insta…

…ll (#550)

The gem's name and install generator should be the same.

README.md

@@ -101,7 +101,7 @@ be loaded outright, and an attempt to re-initialize it manually will raise an ex
 Then run the generator which will set up rack-mini-profiler in development:
 
 ```bash
-bundle exec rails g rack_profiler:install
+bundle exec rails g rack_mini_profiler:install
 ```
 
 #### Rack Builder

lib/generators/rack_mini_profiler/USAGE

@@ -0,0 +1,9 @@
+Description:
+    Generates an initializer for rack-mini-profiler. Use an initializer when manually
+    requiring rack-mini-profiler in your application (using require: false in your Gemfile).
+
+Example:
+    `bin/rails generate rack_mini_profiler:install`
+
+    This generates a an initializer that requires and initializes
+    rack-mini-profiler in development mode.

lib/generators/rack_mini_profiler/install_generator.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module RackMiniProfiler
+  module Generators
+    class InstallGenerator < ::Rails::Generators::Base
+      source_root File.expand_path("templates", __dir__)
+
+      def create_initializer_file
+        copy_file "rack_mini_profiler.rb", "config/initializers/rack_mini_profiler.rb"
+      end
+    end
+  end
+end

lib/generators/rack_profiler/templates/rack_profiler.rb → lib/generators/rack_mini_profiler/templates/rack_mini_profiler.rb

@@ -3,6 +3,6 @@
 if Rails.env.development?
   require "rack-mini-profiler"
 
-  # initialization is skipped so trigger it
+  # The initializer was required late, so initialize it manually.
   Rack::MiniProfilerRails.initialize!(Rails.application)
 end

lib/generators/rack_profiler/install_generator.rb

@@ -1,12 +1,15 @@
 # frozen_string_literal: true
 
+require "generators/rack_mini_profiler/install_generator"
+
 module RackProfiler
   module Generators
-    class InstallGenerator < ::Rails::Generators::Base
-      source_root File.expand_path("templates", __dir__)
+    class InstallGenerator < RackMiniProfiler::Generators::InstallGenerator
+      source_root File.expand_path("../rack_mini_profiler/templates", __dir__)
 
       def create_initializer_file
-        copy_file "rack_profiler.rb", "config/initializers/rack_profiler.rb"
+        warn("bin/rails generate rack_profiler:install is deprecated. Please use rack_mini_profiler:install instead.")
+        super
       end
     end
   end