README.md in texture_packer-1.7.0 vs README.md in texture_packer-1.7.1

@@ -3,5 +3,15 @@
 [![Gem Version](https://img.shields.io/gem/v/texture_packer.svg?style=flat)](https://rubygems.org/gems/texture_packer)
 [![Build Status](https://api.travis-ci.com/khiav223577/texture_packer.svg?branch=master)](https://travis-ci.com/khiav223577/texture_packer)
 [![RubyGems](http://img.shields.io/gem/dt/texture_packer.svg?style=flat)](https://rubygems.org/gems/texture_packer)
 [![Code Climate](https://codeclimate.com/github/khiav223577/texture_packer/badges/gpa.svg)](https://codeclimate.com/github/khiav223577/texture_packer)
 [![Test Coverage](https://codeclimate.com/github/khiav223577/texture_packer/badges/coverage.svg)](https://codeclimate.com/github/khiav223577/texture_packer/coverage)
+
+
+### Usage: 
+
+```
+pack_scss [options]
+    -v, --version                    show the version number
+    -h, --help                       Prints this help
+    -p, --project_dir=PATH           Copy the generated scss files / images to specified project
+```