docs(operators): add documentation for skipUntil

src/operator-docs/filtering/skipUntil.ts

@@ -1,6 +1,38 @@
 import { OperatorDoc } from '../operator.model';
 
 export const skipUntil: OperatorDoc = {
-  'name': 'skipUntil',
-  'operatorType': 'filtering'
+  name: 'skipUntil',
+  operatorType: 'filtering',
+  signature: 'public skipUntil(notifier: Observable): Observable<T>',
+  parameters: [
+    {
+      name: 'notifier',
+      type: 'Observable',
+      attribute: '',
+      description: `The second Observable that has to emit an item before
+       the source Observable's elements begin to be mirrored by the resulting Observable.`
+    }
+  ],
+  marbleUrl: 'http://reactivex.io/rxjs/img/skipUntil.png',
+  shortDescription: {
+    description:
+      'Returns an Observable that skips items emitted by the source Observable until a second Observable emits an item.'
+  },
+  examples: [
+    {
+      name: 'Emits every 1s after 5 seconds',
+      code: `
+      //emit every 1s
+      const source = Rx.Observable.interval(1000);
+      //skip emitted values from source until inner observable emits (6s)
+      const example = source.skipUntil(Rx.Observable.timer(6000));
+      //output: 5...6...7...8........
+      const subscribe = example.subscribe(val => console.log(val));
+      `,
+      externalLink: {
+        platform: 'JSBin',
+        url: 'http://jsbin.com/tapizososu/embed?js,console,output'
+      }
+    }
+  ]
 };