Fix ":" not being removed from the directory name

Add specs for the directory name

Closes #137

Author: oestrich

lib/rspec_api_documentation/views/markup_example.rb

@@ -19,7 +19,7 @@ def respond_to?(method, include_private = false)
       end
 
       def dirname
-        resource_name.downcase.gsub(/\s+/, '_')
+        resource_name.downcase.gsub(/\s+/, '_').gsub(":", "_")
       end
 
       def filename

spec/views/html_example_spec.rb

@@ -2,19 +2,31 @@
 require 'spec_helper'
 
 describe RspecApiDocumentation::Views::HtmlExample do
-  let(:metadata) { {} }
+  let(:metadata) { { :resource_name => "Orders" } }
   let(:group) { RSpec::Core::ExampleGroup.describe("Orders", metadata) }
-  let(:example) { group.example("Ordering a cup of coffee") {} }
+  let(:rspec_example) { group.example("Ordering a cup of coffee") {} }
+  let(:rad_example) do
+    RspecApiDocumentation::Example.new(rspec_example, configuration)
+  end
   let(:configuration) { RspecApiDocumentation::Configuration.new }
-  let(:html_example) { described_class.new(example, configuration) }
+  let(:html_example) { described_class.new(rad_example, configuration) }
+
+  specify "the directory is 'orders'" do
+    expect(html_example.dirname).to eq("orders")
+  end
 
   it "should have downcased filename" do
     expect(html_example.filename).to eq("ordering_a_cup_of_coffee.html")
   end
 
   describe "multi charctor example name" do
+    let(:metadata) { { :resource_name => "オーダ" } }
     let(:label) { "Coffee / Teaが順番で並んでいること" }
-    let(:example) { group.example(label) {} }
+    let(:rspec_example) { group.example(label) {} }
+
+    specify "the directory is 'オーダ'" do
+      expect(html_example.dirname).to eq("オーダ")
+    end
 
     it "should have downcased filename" do
       expect(html_example.filename).to eq("coffee__teaが順番で並んでいること.html")