Updates docs.

Author: ctrlplusb

README.md

@@ -114,6 +114,8 @@ That being said you do have a bail-out ability allowing you to suspend the trave
 
 The API is very simple at the moment, only exposing a single function, which you can import as follows
 
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 ### **reactTreeWalker**
 
 The default export of the library. The function that performs the magic.
@@ -158,6 +160,8 @@ import reactTreeWalker from 'react-tree-walker'
 
 A `Promise` that resolves when the tree walking is completed.
 
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 ### **visitor**
 
 The function that you create and provide to `reactTreeWalker`.