Syntax highlighting for assert_includes

Author: Lorenz Kitzmann

autoload/rails.vim

@@ -3811,7 +3811,7 @@ function! rails#buffer_syntax()
           exe "syn keyword rubyRailsUserMethod ".join(rails#app().user_assertions())
         endif
         syn keyword rubyRailsTestMethod refute refute_empty refute_equal refute_in_delta refute_in_epsilon refute_includes refute_instance_of refute_kind_of refute_match refute_nil refute_operator refute_predicate refute_respond_to refute_same
-        syn keyword rubyRailsTestMethod add_assertion assert assert_block assert_equal assert_in_delta assert_instance_of assert_kind_of assert_match assert_nil assert_no_match assert_not assert_not_equal assert_not_nil assert_not_same assert_nothing_raised assert_nothing_thrown assert_operator assert_raise assert_respond_to assert_same assert_send assert_throws assert_recognizes assert_generates assert_routing flunk fixtures fixture_path use_transactional_fixtures use_instantiated_fixtures assert_difference assert_no_difference assert_valid
+        syn keyword rubyRailsTestMethod add_assertion assert assert_block assert_equal assert_includes assert_in_delta assert_instance_of assert_kind_of assert_match assert_nil assert_no_match assert_not assert_not_equal assert_not_nil assert_not_same assert_nothing_raised assert_nothing_thrown assert_operator assert_raise assert_respond_to assert_same assert_send assert_throws assert_recognizes assert_generates assert_routing flunk fixtures fixture_path use_transactional_fixtures use_instantiated_fixtures assert_difference assert_no_difference assert_valid
         syn keyword rubyRailsTestMethod test setup teardown
         if !buffer.type_name('test-unit')
           syn match   rubyRailsTestControllerMethod  '\.\@<!\<\%(get\|post\|put\|patch\|delete\|head\|process\|assigns\)\>'