Simplifying setup TOC

Author: lostintangent

README.md

@@ -7,19 +7,8 @@ This plugin provides client-side integration for the [CodePush service](http://c
 * [Supported Components](#supported-components)
 * [Getting Started](#getting-started)
 * [iOS Setup](#ios-setup)
-    * [Plugin Installation](#plugin-installation-ios)
-        * [RNPM](#plugin-installation-ios---rnpm)
-        * [CocoaPods](#plugin-installation-ios---cocoapods)
-        * ["Manual"](#plugin-installation-ios---manual)
-    * [Plugin Configuration](#plugin-configuration-ios)
 * [Android Setup](#android-setup)
-    * [Plugin Installation](#plugin-installation-android)
-        * [RNPM](#plugin-installation-android---rnpm)
-        * ["Manual"](#plugin-installation-android---manual)
-    * [Plugin Configuration](#plugin-configuration-android)
 * [Windows Setup](#windows-setup)
-    * [Plugin Installation](#plugin-installation-windows)
-    * [Plugin Configuration](#plugin-configuration-windows)
 * [Plugin Usage](#plugin-usage)
 * [Releasing Updates](#releasing-updates)
 * [API Reference](#api-reference)