Adds Table of Contents to README (#4357)

* adds table of contents

* remove empty line, moved greenkeeper up with other statuses

README.md

@@ -4,18 +4,41 @@
 [![Build Status](https://img.shields.io/travis/parse-community/parse-server/master.svg?style=flat)](https://travis-ci.org/parse-community/parse-server)
 [![Coverage Status](https://img.shields.io/codecov/c/github/parse-community/parse-server/master.svg)](https://codecov.io/github/parse-community/parse-server?branch=master)
 [![npm version](https://img.shields.io/npm/v/parse-server.svg?style=flat)](https://www.npmjs.com/package/parse-server)
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 [![Join Chat](https://img.shields.io/badge/gitter-join%20chat%20%E2%86%92-brightgreen.svg)](https://gitter.im/ParsePlatform/Chat)
+[![Greenkeeper badge](https://badges.greenkeeper.io/parse-community/parse-server.svg)](https://greenkeeper.io/)
 
 Parse Server is an [open source version of the Parse backend](http://blog.parseplatform.org/announcements/introducing-parse-server-and-the-database-migration-tool/) that can be deployed to any infrastructure that can run Node.js.
 
 Parse Server works with the Express web application framework. It can be added to existing web applications, or run by itself.
 
+- [Getting Started](#getting-started)
+    - [Running Parse Server](#running-parse-server)
+        - [Locally](#locally)
+        - [Docker](#inside-a-docker-container)
+        - [Saving an Object](#saving-your-first-object)
+        - [Connect an SDK](#connect-your-app-to-parse-server)
+    - [Running elsewhere](#running-parse-server-elsewhere)
+        - [Sample Application](#parse-server-sample-application)
+        - [Parse Server + Express](#parse-server--express)
+    - [Logging](#logging)
+- [Documentation](#documentation)
+    - [Configuration](#configuration)
+        - [Basic Options](#basic-options)
+        - [Client Key Options](#client-key-options)
+        - [Advanced Options](#advanced-options)
+            - [Logging](#logging-1)
+            - [Email Verification & Password Reset](#email-verification-and-password-reset)
+        - [Using Environment Variables](#using-environment-variables-to-configure-parse-server)
+        - [Available Adapters](#available-adapters)
+        - [Configuring File Adapters](#configuring-file-adapters)
+- [Support](#support)
+- [Ride the Bleeding Edge](#want-to-ride-the-bleeding-edge)
+- [Contributing](#contributing)
+- [Backers](#backers)
+- [Sponsors](#sponsors)
+
 # Getting Started
 
-[![Greenkeeper badge](https://badges.greenkeeper.io/parse-community/parse-server.svg)](https://greenkeeper.io/)
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-
 April 2016 - We created a series of video screencasts, please check them out here: [http://blog.parseplatform.org/learn/parse-server-video-series-april-2016/](http://blog.parseplatform.org/learn/parse-server-video-series-april-2016/)
 
 The fastest and easiest way to get started is to run MongoDB and Parse Server locally.