Add example with US scale line and reprojection

examples/scaleline-indiana-east.html

@@ -0,0 +1,11 @@
+---
+layout: example.html
+title: OpenStreetMap Reprojection with ScaleLine Control
+shortdesc: Demonstrates client-side reprojection of OpenStreetMap to NAD83 Indiana East.
+docs: >
+  This example shows client-side reprojection of OpenStreetMap to NAD83 Indiana East, including a ScaleLine control with US units.
+tags: "reprojection, projection, openstreetmap, nad83, tile, scaleline"
+resources:
+  - http://cdnjs.cloudflare.com/ajax/libs/proj4js/2.3.6/proj4.js
+---
+<div id="map" class="map"></div>

examples/scaleline-indiana-east.js

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+goog.require('ol.Map');
+goog.require('ol.View');
+goog.require('ol.control.ScaleLine');
+goog.require('ol.layer.Tile');
+goog.require('ol.proj');
+goog.require('ol.source.OSM');
+
+proj4.defs('Indiana-East', 'PROJCS["IN83-EF",GEOGCS["LL83",DATUM["NAD83",' +
+    'SPHEROID["GRS1980",6378137.000,298.25722210]],PRIMEM["Greenwich",0],' +
+    'UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],' +
+    'PARAMETER["false_easting",328083.333],' +
+    'PARAMETER["false_northing",820208.333],' +
+    'PARAMETER["scale_factor",0.999966666667],' +
+    'PARAMETER["central_meridian",-85.66666666666670],' +
+    'PARAMETER["latitude_of_origin",37.50000000000000],' +
+    'UNIT["Foot_US",0.30480060960122]]');
+
+var map = new ol.Map({
+  layers: [
+    new ol.layer.Tile({
+      source: new ol.source.OSM()
+    })
+  ],
+  target: 'map',
+  view: new ol.View({
+    projection: 'Indiana-East',
+    center: ol.proj.fromLonLat([-85.685, 39.891], 'Indiana-East'),
+    zoom: 7,
+    extent: ol.proj.transformExtent([-172.54, 23.81, -47.74, 86.46],
+        'EPSG:4326', 'Indiana-East'),
+    minZoom: 6
+  })
+});
+
+map.addControl(new ol.control.ScaleLine({units: 'us'}));