added some installation and usage instructions to the readme

Signed-off-by: Luke Chisholm <[email protected]>

Author: luke-chisholm6

README.md

@@ -1 +1,12 @@
-# go-cli-templates [![Build Status](https://travis-ci.org/luke-chisholm6/go-cli-templates.svg?branch=master)](https://travis-ci.org/luke-chisholm6/go-cli-templates) [![Coverage Status](https://coveralls.io/repos/github/luke-chisholm6/go-cli-templates/badge.svg?branch=master)](https://coveralls.io/github/luke-chisholm6/go-cli-templates?branch=master)
+# go-cli-templates [![Build Status](https://travis-ci.org/luke-chisholm6/go-cli-templates.svg?branch=master)](https://travis-ci.org/luke-chisholm6/go-cli-templates) [![Coverage Status](https://coveralls.io/repos/github/luke-chisholm6/go-cli-templates/badge.svg?branch=master)](https://coveralls.io/github/luke-chisholm6/go-cli-templates?branch=master)
+This is a simple command line utility that leverages the go text/template package to generate dynamic files. 
+My use case is for generating AWS Cli json command files in a ci pipeline.
+### Installation
+```bash
+go get github.com/luke-chisholm6/go-cli-templates
+```
+### Usage
+```bash
+echo "{{.key1}} {{.key2}}" | go-cli-templates key1=Hello key2=world!
+# will output: "Hello world!"
+```