add wip feature for halt

features/hooks/halt.feature

@@ -0,0 +1,27 @@
+Feature: halt
+
+  In an example, before hook, after hook, or around hook, you can
+  halt the current example, group, or suite based on arbitrary
+  criteria.
+
+  @wip
+  Scenario: halt group on failure
+    Given a directory named "spec"
+    And a file named "spec/example_spec.rb" with:
+      """
+      Rspec.configure do |c|
+        c.after(:each) do
+          running_example.halt(:group, :status => 'failed')
+        end
+      end
+      describe "something" do
+        it "fails" do
+          fail 
+        end
+
+        it "does not run this example" do
+        end
+      end
+      """
+    When I run "rspec spec/example_spec.rb"
+    Then the stdout should match "1 example, 1 failure"