Update README.md

Author: skygragon

Diff for: README.md

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+<img src="docs/logo.png" width="350" align="right">
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 # leetcode-cli
 
 A cli tool to enjoy leetcode!
@@ -10,11 +12,11 @@ Great thanks to leetcode.com, a really awesome website!
 [![Build](https://img.shields.io/travis/skygragon/leetcode-cli.svg?style=flat)](https://travis-ci.org/skygragon/leetcode-cli)
 [![Join chat at https://gitter.im/skygragon/leetcode-cli](https://img.shields.io/gitter/room/skygragon/leetcode-cli.svg?style=flat)](https://gitter.im/skygragon/leetcode-cli)
 
-⦙ [Installation Guide](https://skygragon.github.io/leetcode-cli/install) ⦙
-[Documentations](https://skygragon.github.io/leetcode-cli/) ⦙
+⦙ [Install](https://skygragon.github.io/leetcode-cli/install) ⦙
+[Docs](https://skygragon.github.io/leetcode-cli/) ⦙
 [Commands](https://skygragon.github.io/leetcode-cli/commands) ⦙
 [Advanced Tips](https://skygragon.github.io/leetcode-cli/advanced) ⦙
-[Release Notes](https://skygragon.github.io/leetcode-cli/releases) ⦙
+[Releases](https://skygragon.github.io/leetcode-cli/releases) ⦙
 
 * A very [**EFFICIENT**](#quick-start) way to fight problems.
 * [**CACHING**](https://skygragon.github.io/leetcode-cli/advanced#cache) problems locally thus you can easily navigate & think it offline.