Merge pull request ReactiveX#183 from sumitarora/docs-startWith

docs(operators): add documentation for startWith

src/operator-docs/combination/startWith.ts

@@ -1,6 +1,27 @@
 import { OperatorDoc } from '../operator.model';
 
 export const startWith: OperatorDoc = {
-  'name': 'startWith',
-  'operatorType': 'combination'
+  name: 'startWith',
+  operatorType: 'combination',
+  marbleUrl: 'http://reactivex.io/rxjs/img/startWith.png',
+  signature: 'public startWith(values: ...T, scheduler: Scheduler): Observable',
+  shortDescription: {
+    description:
+      'Returns an Observable that emits the items you specify as arguments before it begins to emit items emitted by the source Observable.'
+  },
+  parameters: [
+    {
+      name: 'values',
+      type: '...T',
+      attribute: '',
+      description: 'Items you want the modified Observable to emit first.'
+    },
+    {
+      name: 'scheduler',
+      type: 'Scheduler',
+      attribute: 'optional',
+      description:
+        'A IScheduler to use for scheduling the emissions of the next notifications.'
+    }
+  ]
 };