Migrate to new cloud code interfaces

removes job status object, moves messasge method on req object

Adds 3.0.0 migration guide

Fixes nits about 3.0.0 documentation

Adds update guide to README

src/Controllers/HooksController.js

@@ -166,7 +166,7 @@ export class HooksController {
 }
 
 function wrapToHTTPRequest(hook, key) {
-  return (req, res) => {
+  return (req) => {
     const jsonBody = {};
     for (var i in req) {
       jsonBody[i] = req[i];
@@ -195,37 +195,38 @@ function wrapToHTTPRequest(hook, key) {
       logger.warn('Making outgoing webhook request without webhookKey being set!');
     }
 
-    request.post(hook.url, jsonRequest, function (err, httpResponse, body) {
-      var result;
-      if (body) {
-        if (typeof body === "string") {
-          try {
-            body = JSON.parse(body);
-          } catch (e) {
-            err = {
-              error: "Malformed response",
-              code: -1,
-              partialResponse: body.substring(0, 100)
-            };
+    return new Promise((resolve, reject) => {
+      request.post(hook.url, jsonRequest, function (err, httpResponse, body) {
+        var result;
+        if (body) {
+          if (typeof body === "string") {
+            try {
+              body = JSON.parse(body);
+            } catch (e) {
+              err = {
+                error: "Malformed response",
+                code: -1,
+                partialResponse: body.substring(0, 100)
+              };
+            }
+          }
+          if (!err) {
+            result = body.success;
+            err = body.error;
           }
         }
-        if (!err) {
-          result = body.success;
-          err = body.error;
+        if (err) {
+          return reject(err);
+        } else if (hook.triggerName === 'beforeSave') {
+          if (typeof result === 'object') {
+            delete result.createdAt;
+            delete result.updatedAt;
+          }
+          return resolve({object: result});
+        } else {
+          return resolve(result);
         }
-      }
-
-      if (err) {
-        return res.error(err);
-      } else if (hook.triggerName === 'beforeSave') {
-        if (typeof result === 'object') {
-          delete result.createdAt;
-          delete result.updatedAt;
-        }
-        return res.success({object: result});
-      } else {
-        return res.success(result);
-      }
+      });
     });
   }
 }