add engine link option

spec/cmtool_menu/engine_link_spec.rb

@@ -0,0 +1,24 @@
+require 'spec_helper'
+
+describe Cmtool::Menu::EngineLink do
+  let(:options) { Hash.new }
+  let(:link){ Cmtool::Menu::EngineLink.new(Cmtool::Engine, options)}
+  subject{ link }
+
+  its(:title) { should == 'Cmtool' }
+
+  it 'Should change title when given as option' do
+    options[:title] = 'Engine Title'
+    link.title.should == 'Engine Title'
+  end
+
+  it "should change the path to internal path when given as symbol option" do
+    options[:path] = :faqs
+    link.path.should == '/cmtool/faqs'
+  end
+
+  it "should directly return a path specified as a string in the options" do
+    options[:path] = 'http://www.google.com/'
+    link.path.should == 'http://www.google.com/'
+  end
+end