feat(Filelink): Add Filelink class to replace client.transform (#195)

BREAKING CHANGE: Add new Filelink class for better transforms support

* docs(Filelink): Add documentation to filelink

Author: pcholuj

examples/transform/demo.js

@@ -1,20 +1,17 @@
 window.addEventListener('DOMContentLoaded', function () {
   const apikey = 'YOUR_APIKEY';
-  const client = filestack.init(apikey);
+  const src = new filestack.Filelink('7m1aL2WEQg2Dkh1Cxgpi', apikey)
+  src.blur({amount: 15})
+      .border()
+      .resize({
+        width: 720,
+        height: 480,
+      }
+  );
 
-  const src = client.transform('7m1aL2WEQg2Dkh1Cxgpi', {
-    blur: {
-      amount: 15
-    },
-    border: true,
-    resize: {
-      width: 720,
-      height: 480,
-    },
-  });
 
   const img = document.createElement('img');
-  img.src = src;
+  img.src = src.toString();
 
   document.getElementById('content').appendChild(img);
 });

karma.conf.js

@@ -73,7 +73,7 @@ module.exports = function karmaConfig(config) {
       // 'bs_safari_osx_stable',// for now disabled, need to firgure out whats happend (timeouted)
       // 'bs_chrome_windows',
       // 'bs_firefox_windows',
-      'bs_edge_windows_latest',
+      // 'bs_edge_windows_latest',
       'chrome_headless',
       'firefox_headless',
     ] : [