Do not render links to travis or david

lib/modules/markdown.js

@@ -1,7 +1,11 @@
 'use strict';
 
 var marked = require('gulp-marked'),
-  vfs = require('vinyl-fs');
+  vfs = require('vinyl-fs'),
+  excludeLinks = [
+  'https://travis-ci.org/SC5/sc5-styleguide',
+  'https://david-dm.org/SC5/sc5-styleguide'
+  ];
 
 function dasherize(str) {
   return str.replace(/\s/ig, '-').toLowerCase();
@@ -28,6 +32,10 @@ module.exports = {
       return '<li class="sg">' + text + '</li>\n';
     };
     renderer.link = function(href, title, text) {
+      if (excludeLinks.indexOf(href) >= 0) {
+        return '';
+      }
+
       if (this.options.sanitize) {
         try {
           var prot = decodeURIComponent(unescape(href))

test/markdown.js

@@ -6,6 +6,38 @@ var gulp = require('gulp'),
 
 describe('Markdown', function() {
 
+  describe('renderer', function() {
+
+    var renderer, result;
+
+    beforeEach(function() {
+      renderer = markdown.getRenderer();
+      renderer.options = {
+        sanitize: true
+      };
+    });
+
+    describe('link', function() {
+
+      it('adds class .sg to <a> tags', function() {
+        result = renderer.link('linkHref', 'title', 'link text');
+        expect(result).to.eql('<a class="sg" href="linkHref" title="title">link text</a>');
+      });
+
+      it('excludes link to https://travis-ci.org/SC5/sc5-styleguide', function() {
+        result = renderer.link('https://travis-ci.org/SC5/sc5-styleguide');
+        expect(result).to.eql('');
+      });
+
+      it('excludes link to https://david-dm.org/SC5/sc5-styleguide', function() {
+        result = renderer.link('https://david-dm.org/SC5/sc5-styleguide');
+        expect(result).to.eql('');
+      });
+
+    });
+
+  });
+
   it('getRenderer if formed correctly', function() {
     var renderer = markdown.getRenderer();
     expect(renderer).to.be.an('object');