Update docs

docs/README.md

@@ -43,6 +43,18 @@ From [NPM](https://www.npmjs.com/package/merkletreejs):
 npm install merkletreejs
 ```
 
+Import as ES6 module
+
+```js
+import { MerkleTree } from 'merkletreejs'
+```
+
+Import as CommonJs
+
+```js
+const { MerkleTree } = require('merkletreejs')
+```
+
 ### CDN
 
 Available on [jsDelivr](https://www.jsdelivr.com/) CDN:
@@ -51,6 +63,8 @@ Available on [jsDelivr](https://www.jsdelivr.com/) CDN:
 <script src="https://cdn.jsdelivr.net/npm/merkletreejs@latest/merkletree.js"></script>
 ```
 
+The exported classes will be available on `window` object, e.g. `window.MerkleTree`
+
 ## Example
 
 [https://lab.miguelmota.com/merkletreejs](https://lab.miguelmota.com/merkletreejs)

docs/classes/_src_merkletree_.merkletree.md

@@ -349,7 +349,7 @@ ___
 
 ###  getHexLayers
 
-▸ **getHexLayers**(): *string[]*
+▸ **getHexLayers**(): *string[][]*
 
 getHexLayers
 
@@ -360,7 +360,7 @@ getHexLayers
 const layers = tree.getHexLayers()
 ```
 
-**Returns:** *string[]*
+**Returns:** *string[][]*
 
 ___
 
@@ -506,7 +506,7 @@ ___
 
 ###  getLayers
 
-▸ **getLayers**(): *Buffer[]*
+▸ **getLayers**(): *Buffer[][]*
 
 getLayers
 
@@ -517,7 +517,7 @@ getLayers
 const layers = tree.getLayers()
 ```
 
-**Returns:** *Buffer[]*
+**Returns:** *Buffer[][]*
 
 ___