Update README

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

README.md

@@ -1,23 +1,24 @@
 # leetcode-cli
 
 [![npm version](https://img.shields.io/npm/v/leetcode-cli.svg?style=flat)](https://www.npmjs.com/package/leetcode-cli)
+[![Releases](https://img.shields.io/github/release/skygragon/leetcode-cli.svg?style=flat)](https://github.com/skygragon/leetcode-cli/releases)
 [![license](https://img.shields.io/npm/l/leetcode-cli.svg?style=flat)](https://github.com/skygragon/leetcode-cli/blob/master/LICENSE)
 [![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)
 
 A cli tool to enjoy leetcode!
 
-Great thanks to leetcode.com, an really awesome website!
+Great thanks to leetcode.com, a really awesome website!
 
 ## What can it do?
 
 * A very [**EFFICIENT**](#quick-start) way to fight problems.
-* [**CACHING**](https://github.com/skygragon/leetcode-cli/blob/master/doc/advanced.md#cache) problems locally thus you can easily navigate & think it offline.
+* [**CACHING**](https://skygragon.github.io/leetcode-cli/advanced#cache) problems locally thus you can easily navigate & think it offline.
 * Do everything in **CLI**, no one even knows you are doing leetcode :p
-* [**GENERATING**](https://github.com/skygragon/leetcode-cli/blob/master/doc/commands.md#show) source code template for further coding.
-* Support live [**TEST**](https://github.com/skygragon/leetcode-cli/blob/master/doc/commands.md#test) and [**SUBMIT**](https://github.com/skygragon/leetcode-cli/blob/master/doc/commands.md#submit) againts leetcode.com.
-* [**AUTO LOGIN**](https://github.com/skygragon/leetcode-cli/blob/master/doc/advanced.md#auto-login) among multiple sessions with single leetcode account.
-* Retrieve your previous [**SUBMISSION**](https://github.com/skygragon/leetcode-cli/blob/master/doc/commands.md#submission) thus you can easily backup and manage your code.
+* [**GENERATING**](https://skygragon.github.io/leetcode-cli/commands#show) source code template for further coding.
+* Support live [**TEST**](https://skygragon.github.io/leetcode-cli/commands#test) and [**SUBMIT**](https://skygragon.github.io/leetcode-cli/commands#submit) againts leetcode.com.
+* [**AUTO LOGIN**](https://skygragon.github.io/leetcode-cli/advanced#auto-login) among multiple sessions with single leetcode account.
+* Retrieve your previous [**SUBMISSION**](https://skygragon.github.io/leetcode-cli/commands#submission) thus you can easily backup and manage your code.
 
 ## Demo
 
@@ -57,7 +58,6 @@ From source code:
 	Run test(s) and pray...                 $ leetcode test ./two-sum.cpp -t '[3,2,4]\n7'
 	Submit final solution!                  $ leetcode submit ./two-sum.cpp
 
-## There is More...
+## Documentation
 
-* [Commands Tutorial](https://github.com/skygragon/leetcode-cli/blob/master/doc/commands.md)
-* [Advanced Tips](https://github.com/skygragon/leetcode-cli/blob/master/doc/advanced.md)
+* https://skygragon.github.io/leetcode-cli/