Refactor name of injector

lib/laradi.rb

@@ -9,7 +9,7 @@ module Laradi
   module Mixin
     def dependencies(*deps)
       deps.each { |dep|
-        include $autoinject[dep]
+        include $laradi_injector[dep]
       }
     end
   end

lib/laradi/railtie.rb

@@ -7,7 +7,7 @@ module Laradi
         config.di_config.call(container)
       end
 
-      $autoinject = Dry::AutoInject(container)
+      $laradi_injector = Dry::AutoInject(container)
     end
   end
 end