code: function parseMarkdown (markdownContent) {
    var codeBlocks =  markdownContent
  
    .split('```')
  
    .filter(function (codeBlock, index) {
  
      // Delete the text in between code sections
      if (index % 2 === 0 ||
  
          // Remove non JavaScript and JSON code blocks
          (codeBlock.trim().toLowerCase().indexOf('js')         !== 0 &&
           codeBlock.trim().toLowerCase().indexOf('javascript') !== 0)) {
        return false;
      }
      return true;
    })
  
    .map(function (codeBlock) {
      return {
        lang: codeBlock.split('\n')[0].trim().toLowerCase(),
        code: codeBlock.slice(codeBlock.indexOf('\n') + 1)
      };
    });
  
    return codeBlocks;
  }
docs: [parseMarkdown description]
  @param  {String} markdownContent Content of markdown file
  @return {Array}                  Array of objects with a language and code property