chore: revert `sendKeys` change from e1862887

closes #1175

public/docs/_examples/protractor.config.js

@@ -99,11 +99,15 @@ function itIf(cond, name, func) {
 }
 
 // Hack - because of bug with protractor send keys
+// Hack - because of bug with send keys
 function sendKeys(element, str) {
   return str.split('').reduce(function (promise, char) {
-    return promise.resolve(element.sendKeys(char));
+    return promise.then(function () {
+      return element.sendKeys(char);
+    });
   }, element.getAttribute('value'));
-}
+  // better to create a resolved promise here but ... don't know how with protractor;
+  }
 
 function Reporter(options) {
   var _defaultOutputFile = path.resolve(process.cwd(), "../../", 'protractor-results.txt');