docs: ✏️ add State reference

Author: streamich

README.md

@@ -22,17 +22,15 @@
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-  <pre>
-npm i <a href="https://www.npmjs.com/package/react-use">react-use</a>
-  </pre>
+  <pre>npm i <a href="https://www.npmjs.com/package/react-use">react-use</a></pre>
   <br />
   <br />
 </div>
 
 
 ## Reference
 
-- State
+- [__State__](./docs/State.md)
    - [`useToggle`](./docs/useToggle.md) &mdash; tracks state of a boolean.
    - [`useCounter`](./docs/useCounter.md) &mdash; tracks state of a number.
    - [`useList`](./docs/useList.md) &mdash; tracks state of an array.

docs/State.md

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+# State
+
+*"State Hooks"* allow you to easily manage state of booleans, arrays, and maps.