clarify order of elements on homepage - fix #117

static/app/home/home.html

@@ -25,7 +25,7 @@ <h2 class="panel-title">What is Geobin?</h2>
           <h2 class="panel-title">How do I use it?</h2>
         </div>
         <div class="panel-body">
-        
+
             <p>You can create a new temporary bin by clicking the "<a href="" analytics-on="click" analytics-event="Create Geobin" ng-click="create()">Create a New Geobin</a>" button above to get
                 a new randomly generated Bin ID, or you can use an arbitrary custom Bin ID of your choosing.</p>
 
@@ -77,6 +77,7 @@ <h4>Coordinates</h4>
           <pre>{
   "coords": [0,0]
 }</pre>
+          <p>The order of elements is <code>[x (longitude), y (latitude)]</code>, as specified by the <a href="http://geojson.org/geojson-spec.html#positions">GeoJSON spec</a>.</p>
           <p>accepted keys:</p>
           <p><code>geo</code>, <code>loc</code>, <code>location</code>, <code>coord</code>, <code>coordinate</code>, <code>coords</code>, <code>coordinates</code></p>
         </div>