Merge branch 'master' of github-sfdc:developerforce/Force.com-JavaScript-REST-Toolkit

Author: Pat Patterson

forcetk.js

@@ -77,6 +77,7 @@ if (forcetk.Client === undefined) {
         this.sessionId = null;
         this.apiVersion = null;
         this.instanceUrl = null;
+        this.asyncAjax = true;
     }
 
     /**
@@ -98,6 +99,7 @@ if (forcetk.Client === undefined) {
         $j.ajax({
             type: 'POST',
             url: (this.proxyUrl !== null) ? this.proxyUrl: url,
+            cache: false,
             processData: false,
             data: 'grant_type=refresh_token&client_id=' + this.clientId + '&refresh_token=' + this.refreshToken,
             success: callback,
@@ -149,8 +151,10 @@ if (forcetk.Client === undefined) {
 
         $j.ajax({
             type: method || "GET",
+            async: this.asyncAjax,
             url: (this.proxyUrl !== null) ? this.proxyUrl: url,
             contentType: 'application/json',
+            cache: false,
             processData: false,
             data: payload,
             success: callback,