docs(examples): add comments for loading maps.googleapis script

* Closes #81 and thanks to @taydakov

examples/gh-pages/scripts/client.js

@@ -4,4 +4,8 @@ import {default as ReactRoot} from "./ReactRoot";
 
 require("../styles/index.scss");
 
+/*
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
+ */
 React.render(<ReactRoot />, document.getElementById("react-container"));

examples/gh-pages/scripts/components/GeojsonToComponents.js

@@ -37,6 +37,10 @@ function geometryToComponentWithLatLng (geometry) {
   }
 }
 
+/*
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
+ */
 export default class GeojsonToComponents extends Component {
 
   constructor (...args) {

examples/gh-pages/scripts/components/GettingStarted.js

@@ -8,6 +8,8 @@ const {update} = addons;
 /*
  * This is the modify version of:
  * https://developers.google.com/maps/documentation/javascript/examples/event-arguments
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class GettingStarted extends Component {
 

examples/gh-pages/scripts/components/basics/AsynchronousLoading.js

@@ -4,6 +4,8 @@ import {default as GoogleMap} from "../../../../../src/GoogleMap";
 
 /*
  * https://developers.google.com/maps/documentation/javascript/examples/map-simple-async
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class AsynchronousLoading extends Component {
 

examples/gh-pages/scripts/components/basics/Directions.js

@@ -3,6 +3,9 @@ import {default as React, Component} from "react";
 import {default as GoogleMap} from "../../../../../src/GoogleMap";
 import {default as DirectionsRenderer} from "../../../../../src/DirectionsRenderer";
 
+/*
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
+ */
 export default class Directions extends Component {
 
   state = {

examples/gh-pages/scripts/components/basics/Geolocation.js

@@ -15,6 +15,8 @@ const geolocation = (
 
 /*
  * https://developers.google.com/maps/documentation/javascript/examples/map-geolocation
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class Geolocation extends Component {
 

examples/gh-pages/scripts/components/basics/OverlayView.js

@@ -14,6 +14,9 @@ const STYLES = {
   }
 };
 
+/*
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
+ */
 export default class OverlayViewExample extends Component {
   state = {
     count: 0,

examples/gh-pages/scripts/components/basics/SimpleMap.js

@@ -3,6 +3,8 @@ import {default as React, Component} from "react";
 import {default as GoogleMap} from "../../../../../src/GoogleMap";
 /*
  * Sample From: https://developers.google.com/maps/documentation/javascript/examples/map-simple
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class SimpleMap extends Component {
   /*

examples/gh-pages/scripts/components/basics/StyledMap.js

@@ -3,6 +3,9 @@ import {default as React, Component} from "react";
 import {default as GoogleMap} from "../../../../../src/GoogleMap";
 import {default as InfoBox} from "../../../../../src/addons/InfoBox";
 
+/*
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
+ */
 export default class StyledMap extends Component {
 
   static defaultProps = {

examples/gh-pages/scripts/components/drawing/DrawingTools.js

@@ -8,6 +8,8 @@ import {default as DrawingManager} from "../../../../../src/DrawingManager";
  *
  * Note: requires the Google Maps drawing API library in your script src
  *
+ * Add <script src="https://maps.googleapis.com/maps/api/js?libraries=drawing"></script> to your HTML to provide google.maps reference
+ *
  * Credits: thanks @idolize for the contribution!
  */
 export default class DrawingTools extends Component {

examples/gh-pages/scripts/components/events/AccessingArguments.js

@@ -5,6 +5,8 @@ import {default as Marker} from "../../../../../src/Marker";
 
 /*
  * https://developers.google.com/maps/documentation/javascript/examples/event-arguments
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class AccessingArguments extends Component {
 

examples/gh-pages/scripts/components/events/ClosureListeners.js

@@ -6,6 +6,8 @@ import {default as InfoWindow} from "../../../../../src/InfoWindow";
 
 /*
  * https://developers.google.com/maps/documentation/javascript/examples/event-closure
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class ClosureListeners extends Component {
 

examples/gh-pages/scripts/components/events/GettingProperties.js

@@ -5,6 +5,8 @@ import {default as InfoWindow} from "../../../../../src/InfoWindow";
 
 /*
  * https://developers.google.com/maps/documentation/javascript/examples/event-properties
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class GettingProperties extends Component {
 

examples/gh-pages/scripts/components/events/SimpleClickEvent.js

@@ -5,6 +5,8 @@ import {default as Marker} from "../../../../../src/Marker";
 
 /*
  * https://developers.google.com/maps/documentation/javascript/examples/event-simple
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class SimpleClickEvent extends Component {
 

examples/simplemap/scripts/SimpleMap.js

@@ -8,6 +8,8 @@ const {update} = addons;
 /*
  * This is the modify version of:
  * https://developers.google.com/maps/documentation/javascript/examples/event-arguments
+ *
+ * Add <script src="https://maps.googleapis.com/maps/api/js"></script> to your HTML to provide google.maps reference
  */
 export default class SimpleMap extends Component {