Merge pull request #1131 from Lakerfield/master

Fix code in Your Own Operators documentation

Author: mattpodwysocki

doc/gettingstarted/operators.md

@@ -6,14 +6,14 @@ You can extend RxJS by adding new operators for operations that are not provided
 
 RxJS offers a full set of operators that cover most of the possible operations on a set of entities. However, you might need an operator to add a particular semantic meaning to your query—especially if you can reuse that same operator several times in your code.  Adding new operators to RxJS is a way to extend its capabilities. However, you can also improve code readability by wrapping existing operators into more specialized and meaningful ones.
 
-For example, let's see how we might implement the [_.where](http://lodash.com/docs#where) method from [Lo-Dash](http://lodash.com/) or [Underscore](http://underscorejs.org/), which takes a set of attributes and does a deep comparison for equality.  We might try implementing this from scratch using the `Rx.Observable.createWithDisposable` method such as the following code.
+For example, let's see how we might implement the [_.where](http://lodash.com/docs#where) method from [Lo-Dash](http://lodash.com/) or [Underscore](http://underscorejs.org/), which takes a set of attributes and does a deep comparison for equality.  We might try implementing this from scratch using the `Rx.Observable.create` method such as the following code.
 
 ```js
-Rx.Observable.prototype.whereProperties = function (properties) {
+Rx.Observable.prototype.filterByProperties = function (properties) {
 	var source = this,
 		comparer = Rx.internals.isEqual;
 
-	return Rx.Observable.filterByProperties(function (observer) {
+	return Rx.Observable.create(function (observer) {
 		// Our disposable is the subscription from the parent
 		return source.subscribe(
 			function (data) {