readme: add references to npm

README.md

@@ -13,6 +13,8 @@ The supported Janus plugins currently are:
 - Streaming
 - VideoRoom
 
+The library is available on [npm](https://www.npmjs.com/package/janode) and the source code is on [github](https://github.com/meetecho/janode).
+
 ## Example of usage
 
 This is just a pretty simple hello world for the echotest plugin.
@@ -103,6 +105,16 @@ const admin = await Janode.connect({
 
 ## Installation
 
+Installing the library from npm is as easy as:
+
+
+```bash
+npm install janode
+```
+
+On the other hand, in case you got the code from git you must build the library through:
+
+
 ```bash
 npm run build
 ```
@@ -128,4 +140,4 @@ You need to create a bundle with the core library and the needed plugins using a
 - parse the `browser` field in the `package.json`
 
 If you get the code from the repo, you can find a `rollup` bundling sample in the `bundle.sh` script under `examples/browser/`.
-The output will be a `bundle.js` script that defines an `App` global object with the members `Janode` and `EchoTestPlugin`.
+The output will be a `bundle.js` script that defines an `App` global object with the members `Janode` and `EchoTestPlugin`.