Add deprecation for positionalParams specification

As part of emberjs#2256
CHANDAN2271 · Oct 9, 2015 · 142393a · 142393a
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commit 142393a
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diff --git a/source/deprecations/v1.x.html.md b/source/deprecations/v1.x.html.md
@@ -911,6 +911,32 @@ export default Ember.Controller.extend({
 
 You can [view and manipulate this example on jsbin](http://emberjs.jsbin.com/qegikoliri/1/edit?html,js,output)
 
+#### Set `positionalParams` as a static property on the class
+
+Setting `positionalParams` within `.extend` is deprecated. It has to be set as a static property on the class itself (`.reopenClass`).
+
+Plaease change this:
+
+```javascript
+import Ember from 'ember';
+
+export default Ember.Component.extend({
+  positionalParams: [ 'a', 'b' ]
+});
+```
+
+to this:
+
+```javascript
+import Ember from 'ember';
+
+var Thing = Ember.Component.extend();
+Thing.reopenClass({
+  positionalParams: [ 'a', 'b' ]
+});
+
+```
+
 #### Ember.ReduceComputed / Ember.ArrayComputed
 
 This two little monsters served us well for a long time. They provided semantics that allowed to