docs: upgrade to v1.4.0 to pypi and note it to the readme doc

Author: Jacksgong

README-zh.md

@@ -7,7 +7,7 @@
 ![](https://img.shields.io/badge/license-Apache2-blue.svg)
 [![](https://img.shields.io/badge/readme-English-blue.svg)](https://github.com/Jacksgong/okcat)
 [![](https://img.shields.io/badge/readme-中文-blue.svg)](https://github.com/Jacksgong/okcat/blob/master/README-zh.md)
-[![](https://img.shields.io/badge/pip-v1.3.0%20okcat-yellow.svg)](https://pypi.python.org/pypi/OkCat)
+[![](https://img.shields.io/badge/pip-v1.4.0%20okcat-yellow.svg)](https://pypi.org/project/OkCat/1.4.0/)
 [![Build Status](https://travis-ci.org/Jacksgong/okcat.svg?branch=master)](https://travis-ci.org/Jacksgong/okcat)
 
 强大的日志处理组件。

README.md

@@ -7,7 +7,7 @@
 ![](https://img.shields.io/badge/license-Apache2-blue.svg)
 [![](https://img.shields.io/badge/readme-English-blue.svg)](https://github.com/Jacksgong/okcat)
 [![](https://img.shields.io/badge/readme-中文-blue.svg)](https://github.com/Jacksgong/okcat/blob/master/README-zh.md)
-[![](https://img.shields.io/badge/pip-v1.3.0%20okcat-yellow.svg)](https://pypi.python.org/pypi/OkCat)
+[![](https://img.shields.io/badge/pip-v1.4.0%20okcat-yellow.svg)](https://pypi.org/project/OkCat/1.4.0/)
 [![Build Status](https://travis-ci.org/Jacksgong/okcat.svg?branch=master)](https://travis-ci.org/Jacksgong/okcat)
 
 An powerful log processor.