docs: clarify that this project aligns with the MD spec from 2014-2017 (#11463)

clearly reference that the Angular Material project is that place
- to find an implementation of the new MD spec
fix extra space in version string
add Gitter and NPM badges to readme

Relates to #11415. Relates to #11420.

Author: Splaktar

README.md

@@ -1,13 +1,23 @@
-# Material Design for AngularJS Apps [![Build Status](https://travis-ci.org/angular/material.svg)](https://travis-ci.org/angular/material)
+# Material Design for AngularJS Apps
+[![npm version](https://badge.fury.io/js/angular-material.svg)](https://www.npmjs.com/package/angular-material)
+[![Build Status](https://travis-ci.org/angular/material.svg)](https://travis-ci.org/angular/material)
+[![Gitter](https://badges.gitter.im/angular/material2.svg)](https://gitter.im/angular/material?utm_source=badge&utm_medium=badge)
 
 [Material Design](https://material.io/archive/guidelines/) is a specification for a
 unified system of visual, motion, and interaction design that adapts across different devices. Our
 goal is to deliver a lean, lightweight set of AngularJS-native UI elements that implement the
 material design specification for use in AngularJS single-page applications (SPAs).
 
+**AngularJS Material** is an implementation of Google's 
+[Material Design Specification (2014-2017)](https://material.io/archive/guidelines/material-design/)
+for [AngularJS](https://angularjs.org) developers.
+
+For an implementation of the [Material Design Specification (2018+)](https://material.io/design/),
+please see the [Angular Material](https://github.com/angular/material2) project which is built for
+[Angular](https://angular.io) developers.
+
 ![venn diagram](https://cloud.githubusercontent.com/assets/210413/5077572/30dfc2f0-6e6a-11e4-9723-07c918128f4f.png)
 
-AngularJS Material is an implementation of Google's [Material Design Specification](https://material.io/archive/guidelines/material-design/).
 AngularJS Material includes a rich set of reusable, well-tested, and accessible UI components.
 
 Quick Links:
@@ -203,4 +213,3 @@ Once you have all the necessary assets installed, add `ngMaterial` and `ngMessag
 ```javascript
 angular.module('myApp', ['ngMaterial', 'ngMessages']);
 ```
-

docs/app/partials/home.tmpl.html

@@ -2,9 +2,11 @@
   <md-content>
     <h2 class="md-headline" style="margin-top: 0;">What is AngularJS Material?</h2>
     <p>
-      AngularJS Material is both a UI Component framework and a reference implementation of Google's
-      <a href="https://material.io/archive/guidelines/" target="_blank" rel="noopener">Material Design Specification</a>.
-      This project provides a set of reusable, well-tested, and accessible UI components based on Material Design.
+      AngularJS Material is an implementation of Google's
+      <a href="https://material.io/archive/guidelines/" target="_blank" rel="noopener">
+        Material Design Specification (2014-2017)</a>.
+      This project provides a set of reusable, well-tested, and accessible UI components for
+      <a href="https://angularjs.org" target="_blank" rel="noopener">AngularJS</a> developers.
     </p>
     <ul class="buckets" layout layout-align="center center" layout-wrap>
       <li flex="50" flex-gt-md="25" ng-repeat="(index, link) in [
@@ -24,19 +26,39 @@ <h2 class="md-headline" style="margin-top: 0;">What is AngularJS Material?</h2>
       </li>
     </ul>
 
-    <br/>
     <h2 class="md-headline">AngularJS versus Angular?</h2>
     <p>
       The AngularJS Material library is a mature and stable product that is ready for production use.
       Developers should note that AngularJS Material works only with
       <a href="https://angularjs.org/" target="_blank" rel="noopener">AngularJS 1.x</a>.
     </p>
     <ul>
-      <li>Current AngularJS Material development efforts are focused on bug fixes, accessibility, and minor improvements.</li>
-      <li>The Angular Material library (for Angular v2+) can be found in the
-        <a href="https://github.com/angular/material2">angular/material2</a> GitHub repository.
+      <li>
+        Current AngularJS Material development efforts are focused on bug fixes, accessibility, and
+        minor improvements.
+      </li>
+      <li>
+        The Angular Material library (for Angular v2+) can be found in the
+        <a href="https://github.com/angular/material2" target="_blank" rel="noopener">angular/material2</a>
+        GitHub repository.
       </li>
     </ul>
+
+    <br/>
+    <h2 class="md-headline">The Latest Material Design</h2>
+    <p>
+      The latest update to Material Design
+      (<a href="https://www.youtube.com/playlist?list=PLJ21zHI2TNh-rX-Xr_xi9KIEcbdee_1Ah" target="_blank" rel="noopener">video playlist</a>)
+      was announced at Google I/O in May, 2018
+      (<a href="https://design.google/library/io-2018-our-definitive-guide-design/" target="_blank" rel="noopener">recap blog post</a>).
+      For an implementation of this new
+      <a href="https://material.io/design" target="_blank" rel="noopener">Material Design Specification</a>,
+      please see the <a href="https://github.com/angular/material2" target="_blank" rel="noopener">Angular Material</a>
+      project which is built for <a href="https://angular.io" target="_blank" rel="noopener">Angular</a>
+      developers.
+    </p>
+
+    <h2 class="md-headline">Change Log</h2>
     <p>
       Please refer to our changelog for up-to-date listings of all v1.x improvements and breaking changes.
     </p>
@@ -227,8 +249,8 @@ <h2 class="md-headline">Google's Material Design</h2>
     <br/>
     <p class="md-caption" style="text-align: center; margin-bottom: 0;">
       These docs were generated from
-      (<a ng-href="{{BUILDCONFIG.repository}}/{{menu.version.current.github}}" target="_blank" class="md-accent" >
-      v{{BUILDCONFIG.version}} - SHA {{BUILDCONFIG.commit.substring(0,7)}}</a>)
+      (<a ng-href="{{BUILDCONFIG.repository}}/{{menu.version.current.github}}" target="_blank"
+          rel="noopener" class="md-accent">v{{BUILDCONFIG.version}} - SHA {{BUILDCONFIG.commit.substring(0,7)}}</a>)
       on (<strong>{{BUILDCONFIG.date}}</strong>) GMT.
     </p>
   </md-content>