Add i18n scenarios

This is related to cucumber/cucumber-js#34.
Please note that this *will fail* with the current master
of cucumber/cucumber-js.

i18n.feature

@@ -1 +1,39 @@
-Feature: Internationalization (I18n)
+Feature: Internationalization (I18n)
+
+  Cucumber supports feature files written in many different languages.
+  A feature written in another than the default language (English) 
+  must start with a comment line in the following form
+  "# language: <code>"
+  where <code> refers to a two-letter (ISO 639-1) language code.
+
+  Scenario: A non-english Feature
+    Given the following feature:
+      """
+      # language: de
+
+      Funktionalität: Ein Feature
+
+        Szenario: Ein Szenario
+          Wenn ich "A" sage
+          Dann muss ich auch "B" sagen
+      """
+    When Cucumber runs the feature
+    Then the feature passes
+
+  Scenario: Only One Language per File
+    The "# language: <code>"-directive is ignored if it is not the
+    very first non-empty line in the file.
+
+    Given the following feature:
+      """
+
+      Feature: some feature
+
+      # language: de
+        Scenario: some scenario
+          When I say "A"
+          Then I must say "B" as well
+      """
+    When Cucumber runs the feature
+    Then the feature passes
+