Adds pipeline badges and improves documentation.

README.md

@@ -1,9 +1,22 @@
 # Argo
+[![Build Status](https://travis-ci.org/dsposito/argo.svg?branch=master)](https://travis-ci.org/dsposito/argo)
+[![Coverage Status](https://coveralls.io/repos/github/dsposito/argo/badge.svg?branch=master)](https://coveralls.io/github/dsposito/argo?branch=master)
+[![Latest Stable Version](https://poser.pugx.org/dsposito/argo/v/stable.png)](https://packagist.org/packages/dsposito/argo)
 
+## Overview
 Argo is a useful utility for shipping-related tasks. In particular, it deduces the shipping carrier, provider and other information based on a provided package tracking number.
 
 In [Greek mythology](http://en.wikipedia.org/wiki/Argo), Argo (in Greek, meaning 'swift') was the ship on which Jason and the Argonauts sailed from Iolcos to retrieve the Golden Fleece. Argo was said to have been planned with the help of Athena - constructed with magical pieces of timber from the sacred forest of Dodona.
 
+## Installation
+Run the following [composer](https://getcomposer.org/doc/00-intro.md#installation-linux-unix-osx) command to add the package to your project:
+
+```
+composer require dsposito/argo
+```
+
+Alternatively, add `"dsposito/argo": "^2.0"` to your composer.json file.
+
 ## Usage
 Simply provide a tracking number when initializing a new package instance.
 
@@ -18,6 +31,7 @@ Example output:
 ```
 Argo\Package Object
 (
+    [tracking_code_original] => 420 90401 9405 5108 9841 6000 5592 67
     [tracking_code] => 9405510898416000559267
     [carrier] => Argo\Carrier Object
         (
@@ -31,3 +45,11 @@ Argo\Package Object
         )
 )
 ```
+
+## Tests
+To run the test suite, run the following commands from the root directory:
+
+```
+composer install
+vendor/bin/phpunit
+```