Add streaming iterables guide (#459)

* docs: add streaming iterables guide placeholder

* chore: move peer discovery readme to doc fold:wqer

* docs: add link to async refactor issue

Author: jacobheun

README.md

@@ -336,7 +336,7 @@ Required keys in the `options` object:
 > Peer has been discovered.
 
 If `autoDial` is `true`, applications should **not** attempt to connect to the peer
-unless they are performing a specific action. See [peer discovery and auto dial](./PEER_DISCOVERY.md) for more information.
+unless they are performing a specific action. See [peer discovery and auto dial](./doc/PEER_DISCOVERY.md) for more information.
 
 - `peer`: instance of [PeerInfo][]
 

PEER_DISCOVERY.md renamed to doc/PEER_DISCOVERY.md

@@ -0,0 +1,32 @@
+# Iterable Streams
+
+> This document is a guide on how to use Iterable Streams in Libp2p. As a part of the [refactor away from callbacks](https://github.com/ipfs/js-ipfs/issues/1670), we have also moved to using Iterable Streams instead of [pull-streams](https://pull-stream.github.io/). If there are missing usage guides you feel should be added, please submit a PR!
+
+## Table of Contents
+
+- [Iterable Streams](#iterable-streams)
+  - [Table of Contents](#table-of-contents)
+  - [Usage Guide](#usage-guide)
+  - [Iterable Modules](#iterable-modules)
+
+## Usage Guide
+
+**Coming Soon!**
+
+## Iterable Modules
+
+- [it-handshake][it-handshake] Handshakes for binary protocols with iterable streams.
+- [it-length-prefixed][it-length-prefixed] Streaming length prefixed buffers with async iterables.
+- [it-pair][it-pair] Paired streams that are internally connected.
+- [it-pipe][it-pipe] Create a pipeline of iterables. Works with duplex streams.
+- [it-pushable][it-pushable] An iterable that you can push values into.
+- [it-reader][it-reader] Read an exact number of bytes from a binary, async iterable.
+- [streaming-iterables][streaming-iterables] A Swiss army knife for async iterables.
+
+[it-handshake]: https://github.com/jacobheun/it-handshake
+[it-length-prefixed]: https://github.com/alanshaw/it-length-prefixed
+[it-pair]: https://github.com/alanshaw/it-pair
+[it-pipe]: https://github.com/alanshaw/it-pipe
+[it-pushable]: https://github.com/alanshaw/it-pushable
+[it-reader]: https://github.com/alanshaw/it-reader
+[streaming-iterables]: https://github.com/bustle/streaming-iterables