title: xlxs.js how does the "l" cell hyperlink object option work
body: <p>Im currently using the following library to make excel documents 
  <a href="https://github.com/SheetJS/js-xlsx/blob/master/README.md" rel="noreferrer">https://github.com/SheetJS/js-xlsx/blob/master/README.md</a></p>
  
  <p>right now two of my cells look like this</p>
  
  <pre><code>ws[XLSX.utils.encode_cell({c: 0, r: 1})] = {v: "Report Url", s: {font : {sz : "11", bold : true}}}
  ws[XLSX.utils.encode_cell({c: 1, r: 1})] = {v: self.url, s: {font : {sz : "11"}}}
  </code></pre>
  
  <p>Which yield a row with: "Report Url" | ::really long ugly url::</p>
  
  <p>The Documentation says there is an "l" option But gives no documentation as to how to use it. 
  In README:</p>
  
  <p>Cell object:</p>
  
  <p>'::l:: cell hyperlink object (.Target holds link, .tooltip is tooltip)'</p>
  
  <p>Does anyone have an exp with it, I'd like the excel to have a row with just one column that says "report url" and it would be a clickable link </p>
  
  <p>All the things I tried that failed:</p>
  
  <pre><code>ws[XLSX.utils.encode_cell({c: 0, r: 1})] = {l: self.url, s: {font : {sz : "11", bold : true}}}
  ws[XLSX.utils.encode_cell({c: 0, r: 1})] = {v: "url", l: self.url, s: {font : {sz : "11", bold : true}}}
  ws[XLSX.utils.encode_cell({c: 0, r: 1})] = {v: Target,l: {Target :self.url}, s: {font : {sz : "11", bold : true}}}
  ws[XLSX.utils.encode_cell({c: 0, r: 1})] = {l: {Target :self.url}, s: {font : {sz : "11", bold : true}}}
  </code></pre>
  
  <p>Any Ideas?</p>