readme update for v0.3 release

[ci skip]

Author: jeevatkm

README.md

@@ -3,7 +3,7 @@
 [![Build Status](https://travis-ci.org/go-aah/essentials.svg?branch=master)](https://travis-ci.org/go-aah/essentials) [![codecov](https://codecov.io/gh/go-aah/essentials/branch/master/graph/badge.svg)](https://codecov.io/gh/go-aah/essentials/branch/master) [![Go Report Card](https://goreportcard.com/badge/aahframework.org/essentials.v0)](https://goreportcard.com/report/aahframework.org/essentials.v0)
 [![Version](https://img.shields.io/badge/version-0.3-blue.svg)](https://github.com/go-aah/essentials/releases/latest) [![GoDoc](https://godoc.org/aahframework.org/essentials.v0?status.svg)](https://godoc.org/aahframework.org/essentials.v0)  [![License](https://img.shields.io/github/license/go-aah/essentials.svg)](LICENSE)
 
-***v0.2 [released](https://github.com/go-aah/essentials/releases/latest) and tagged on Mar 03, 2017***
+***v0.3 [released](https://github.com/go-aah/essentials/releases/latest) and tagged on Mar 16, 2017***
 
 `essentials` contain simple & useful utils for go lang. aah framework utilizes essentials (aka `ess`) library across. Essential library complements with handy methods for:
 * filepath
@@ -17,10 +17,16 @@
 *`essentials` developed for aah framework. However, it's an independent library, can be used separately with any `Go` language project. Feel free to use it.*
 
 # Installation
-#### Stable - Version
+#### Stable Version - Production Ready
 ```sh
 # install the library
 go get -u aahframework.org/essentials.v0
 ```
 
+#### Development Version - Edge
+```sh
+# install the development version
+go get -u aahframework.org/essentials.v0-unstable
+```
+
 See official page [TODO]