Added links to submodules

Signed-off-by: Diwank Singh <diwank.singh@gmail.com>

Author: creatorrr

index.md

@@ -10,14 +10,29 @@
 
 The `core` module contains some basic utility functions to make working with `web streams` easier.
 
+  -   [Introducing pipes/core](/core#introducing-pipescore)
+  -   [About](/core#about)
+  -   [Installing](/core#installing)
+  -   [API Reference](/core#api-reference)
+
 ## [pipes/utils](http://pipes.js.org/utils)
 
 The `pipesjs/utils` module is to `web streams` what `highland.js` is to `node streams`. It contains utility functions to make working with `web streams` a lot easier. For more about `Web Streams`, refer to the [spec](https://streams.spec.whatwg.org).
 
+  -   [Introducing pipes/utils](/utils#introducing-pipesutils)
+  -   [About](/utils#about)
+  -   [Installing](/utils#installing)
+  -   [API Reference](/utils#api-reference)
+
 ## [pipes/convert](http://pipes.js.org/convert)
 
 The `pipesjs/convert` module provides various functions to convert `web streams` to other similar `data structures` like `highland` streams, `Observable`s, `Rx` streams etc. and vice versa.
 
+  -   [Introducing pipes/convert](/convert#introducing-pipesconvert)
+  -   [About](/convert#about)
+  -   [Installing](/convert#installing)
+  -   [API Reference](/convert#api-reference)
+
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