Change "Angular 4" to "Angular 4 and 5" in demo site and readme

Author: dschnelldavis

README.md

@@ -3,7 +3,7 @@
 [![npm version](https://img.shields.io/npm/v/angular2-json-schema-form.svg?style=plastic)](https://www.npmjs.com/package/angular2-json-schema-form) [![npm downloads](https://img.shields.io/npm/dm/angular2-json-schema-form.svg?style=plastic)](https://www.npmjs.com/package/angular2-json-schema-form) [![GitHub MIT License](https://img.shields.io/github/license/dschnelldavis/angular2-json-schema-form.svg?style=social)](https://github.com/dschnelldavis/angular2-json-schema-form)
 [![Dependencies](https://david-dm.org/dschnelldavis/angular2-json-schema-form.svg)](https://david-dm.org/dschnelldavis/angular2-json-schema-form) [![devDependencies](https://david-dm.org/dschnelldavis/angular2-json-schema-form/dev-status.svg)](https://david-dm.org/dschnelldavis/angular2-json-schema-form?type=dev)
 
-A [JSON Schema](http://json-schema.org) Form builder for Angular 4 or 5, similar to, and mostly API compatible with,
+A [JSON Schema](http://json-schema.org) Form builder for Angular 4 and 5, similar to, and mostly API compatible with,
 
   * [JSON Schema Form](https://github.com/json-schema-form)'s [Angular Schema Form](http://schemaform.io) for [AngularJS](https://angularjs.org) ([examples](http://schemaform.io/examples/bootstrap-example.html))
   * [Mozilla](https://blog.mozilla.org/services/)'s [React JSON Schema Form](https://github.com/mozilla-services/react-jsonschema-form) for [React](https://facebook.github.io/react/) ([examples](https://mozilla-services.github.io/react-jsonschema-form/)), and

src/demo/app/demo.component.html

@@ -4,7 +4,7 @@
   </mat-toolbar>
   <div class="header-content">
     An Angular <a href="http://json-schema.org/">JSON Schema</a> Form builder
-    for Angular 4, similar to, and mostly API compatible with,
+    for Angular 4 and 5, similar to, and mostly API compatible with,
     <span class="avoidwrap">
       <!-- JSON Schema Form's Angular Schema Form -->
       <!-- https://github.com/json-schema-form -->