docs(operators): add documentation for of

src/operator-docs/creation/of.ts

@@ -1,6 +1,68 @@
 import { OperatorDoc } from '../operator.model';
 
 export const ofOperator: OperatorDoc = {
-  'name': 'of',
-  'operatorType': 'creation'
+  name: 'of',
+  operatorType: 'creation',
+  signature: 'public of(values: ...T, scheduler: IScheduler ): Observable',
+  parameters: [
+    {
+      name: 'args',
+      type: 'T',
+      description: 'Arguments that represent next values to be emitted.',
+      attribute: ''
+    },
+    {
+      name: 'scheduler',
+      type: 'IScheduler',
+      description:
+        'A IScheduler to use for scheduling the emissions of the next notifications.',
+      attribute: 'optional'
+    }
+  ],
+  relatedOperators: ['create', 'empty', 'never', 'throw'],
+  marbleUrl: 'http://reactivex.io/rxjs/img/of.png',
+  shortDescription: {
+    description: `Creates an Observable that emits some values you specify as arguments,
+    immediately one after the other, and then emits a complete notification.`
+  },
+  walkthrough: {
+    description: `
+      <p>
+      This static operator is useful for creating a simple Observable that only emits the arguments given,
+      and the complete notification thereafter. It can be used for composing with other Observables,
+      such as with concat. By default, it uses a null IScheduler, which means the next notifications
+      are sent synchronously, although with a different IScheduler it is possible to determine
+      when those notifications will be delivered.</p>
+    `
+  },
+  examples: [
+    {
+      name: `Emit 10, 20, 30, then 'a', 'b', 'c', then start ticking every second.`,
+      code: `
+    import { of } from 'rxjs/observable/of';
+    import { interval } from 'rxjs/observable/interval';
+    import { concat } from 'rxjs/operators';
+
+    const numbers = of(10, 20, 30);
+    const letters = of('a', 'b', 'c');
+    const interval$ = interval(1000);
+    const result = numbers.pipe(
+      concat(letters, interval$),
+    result.subscribe(x => console.log(x));`,
+      // 10
+      // 20
+      // 30
+      // 'a'
+      // 'b'
+      // 'c'
+      // 0
+      // 1
+      // 2
+      // ...
+      externalLink: {
+        platform: 'JSBin',
+        url: 'http://jsbin.com/hiquyaluqa/1/embed?js,console'
+      }
+    }
+  ]
 };