Add monkey patch to hack aruba steps (must, should)

features/support/env.rb

@@ -1 +1,16 @@
+module Cucumber
+  class Runtime
+    alias :old_step_match :step_match
+
+    def step_match(step_name, name_to_report = nil)
+      if step_name.include? ' must '
+        name_to_report = step_name.dup
+        step_name.gsub! ' must ', ' should '
+      end
+
+      old_step_match(step_name, name_to_report)
+    end
+  end
+end
+
 require 'aruba/cucumber'