Fix tutorial link in README.md

Summary:
The tutorial has moved to a different URL, so the link currently ends up at the getting started page.

I also changed the remaining non-HTTPS urls in README.md to use HTTPS after checking they supported it. And I changed the Addons.Mozilla.org link to a language-agnostic one.
Closes https://github.com/facebook/react-native/pull/8047

Differential Revision: D3430542

Pulled By: javache

fbshipit-source-id: 4c5ccea9a5720126870a5df1be5073a6cc2f34ae

README.md

@@ -1,6 +1,6 @@
-# React Native [![Build Status](https://travis-ci.org/facebook/react-native.svg?branch=master)](https://travis-ci.org/facebook/react-native) [![Circle CI](https://circleci.com/gh/facebook/react-native.svg?style=svg)](https://circleci.com/gh/facebook/react-native) [![npm version](https://badge.fury.io/js/react-native.svg)](http://badge.fury.io/js/react-native)
+# React Native [![Build Status](https://travis-ci.org/facebook/react-native.svg?branch=master)](https://travis-ci.org/facebook/react-native) [![Circle CI](https://circleci.com/gh/facebook/react-native.svg?style=svg)](https://circleci.com/gh/facebook/react-native) [![npm version](https://badge.fury.io/js/react-native.svg)](https://badge.fury.io/js/react-native)
 
-React Native enables you to build world-class application experiences on native platforms using a consistent developer experience based on JavaScript and [React](http://facebook.github.io/react). The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.
+React Native enables you to build world-class application experiences on native platforms using a consistent developer experience based on JavaScript and [React](https://facebook.github.io/react). The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.
 
 Supported operating systems are >= Android 4.1 (API 16) and >= iOS 7.0.
 
@@ -20,17 +20,17 @@ See the official [React Native website](https://facebook.github.io/react-native/
 
 ## Getting Started
 
-- Follow the [Getting Started guide](http://facebook.github.io/react-native/docs/getting-started.html) to install React Native and its dependencies.
-- Check out this [tutorial](https://facebook.github.io/react-native/docs/tutorial.html) to walk through your first project that fetches real data and displays it in a list.
+- Follow the [Getting Started guide](https://facebook.github.io/react-native/docs/getting-started.html) to install React Native and its dependencies.
+- Check out this [tutorial](https://facebook.github.io/react-native/docs/sample-application-movies.html) to walk through your first project that fetches real data and displays it in a list.
 - [Open the UIExplorer example project](#examples) to see a list of components that ship with React Native.
-- Install the React Developer Tools for [Chrome](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi) or [Firefox](https://addons.mozilla.org/en-US/firefox/addon/react-devtools/) for better debugging [(read more)](http://facebook.github.io/react-native/docs/debugging.html).
+- Install the React Developer Tools for [Chrome](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi) or [Firefox](https://addons.mozilla.org/firefox/addon/react-devtools/) for better debugging [(read more)](https://facebook.github.io/react-native/docs/debugging.html).
 - Try out apps from the [Showcase](https://facebook.github.io/react-native/showcase.html) to see what React Native is capable of!
 
 ## Getting Help
 
 Please use these community resources for getting help. We use the GitHub issues for tracking bugs and feature requests and have limited bandwidth to address them.
 
-- Ask a question on [StackOverflow](http://stackoverflow.com/) and tag it with `react-native`
+- Ask a question on [StackOverflow](https://stackoverflow.com/) and tag it with `react-native`
 - Chat with us on [Reactiflux](https://discord.gg/0ZcbPKXt5bWJVmUY) in #react-native
 - Articulate your feature request or upvote existing ones on [Product Pains](https://productpains.com/product/react-native/)
 - Start a thread on the [React Discussion Board](https://discuss.reactjs.org/)
@@ -47,7 +47,7 @@ Please use these community resources for getting help. We use the GitHub issues
 
 Another great way to learn more about the components and APIs included with React Native is to read their source. Look under the `Libraries` directory for components like `ScrollView` and `Navigator`, for example. The UIExplorer example is also here to demonstrate some of the ways to use these components. From the source you can get an accurate understanding of each component’s behavior and API.
 
-The React Native documentation only discusses the components, APIs and topics specific to React Native (React on iOS and Android). For further documentation on the React API that is shared between React Native and React DOM, refer to the [React documentation](http://facebook.github.io/react/).
+The React Native documentation only discusses the components, APIs and topics specific to React Native (React on iOS and Android). For further documentation on the React API that is shared between React Native and React DOM, refer to the [React documentation](https://facebook.github.io/react/).
 
 ## Examples
 
@@ -74,7 +74,7 @@ Note that you'll need the Android NDK installed, see [prerequisites](https://git
 - Looking for a component? [JS.coach](https://js.coach/react-native)
 - Fellow developers write and publish React Native modules to npm and open source them on GitHub.
 - Making modules helps grow the React Native ecosystem and community. We recommend writing modules for your use cases and sharing them on npm.
-- Read the guides on Native Modules ([iOS](http://facebook.github.io/react-native/docs/native-modules-ios.html), [Android](http://facebook.github.io/react-native/docs/native-modules-android.html)) and Native UI Components ([iOS](http://facebook.github.io/react-native/docs/native-components-ios.html), [Android](http://facebook.github.io/react-native/docs/native-components-android.html)) if you are interested in extending native functionality.
+- Read the guides on Native Modules ([iOS](https://facebook.github.io/react-native/docs/native-modules-ios.html), [Android](https://facebook.github.io/react-native/docs/native-modules-android.html)) and Native UI Components ([iOS](https://facebook.github.io/react-native/docs/native-components-ios.html), [Android](https://facebook.github.io/react-native/docs/native-components-android.html)) if you are interested in extending native functionality.
 
 ## Upgrading