readme update for v0.4 release

[ci skip]

README.md

@@ -1,9 +1,9 @@
 # log - aah framework
 [![Build Status](https://travis-ci.org/go-aah/log.svg?branch=master)](https://travis-ci.org/go-aah/log) [![codecov](https://codecov.io/gh/go-aah/log/branch/master/graph/badge.svg)](https://codecov.io/gh/go-aah/log/branch/master) [![Go Report Card](https://goreportcard.com/badge/aahframework.org/log.v0)](https://goreportcard.com/report/aahframework.org/log.v0)
-[![Version](https://img.shields.io/badge/version-0.3.2-blue.svg)](https://github.com/go-aah/log/releases/latest) [![GoDoc](https://godoc.org/aahframework.org/log.v0?status.svg)](https://godoc.org/aahframework.org/log.v0)
+[![Version](https://img.shields.io/badge/version-0.4-blue.svg)](https://github.com/go-aah/log/releases/latest) [![GoDoc](https://godoc.org/aahframework.org/log.v0?status.svg)](https://godoc.org/aahframework.org/log.v0)
 [![License](https://img.shields.io/github/license/go-aah/log.svg)](LICENSE)
 
-***v0.3.2 [released](https://github.com/go-aah/log/releases/latest) and tagged on May 17, 2017***
+***v0.4 [released](https://github.com/go-aah/log/releases/latest) and tagged on Jun 01, 2017***
 
 Simple, flexible & powerful `Go` logger inspired by standard logger & Google glog. aah framework utilizes `log` library across.