add build script to create phar archive (closes #18)

README.md

@@ -25,12 +25,31 @@
 
 ## Setup
 
-### Using [composer](https://getcomposer.org):
+### Using [composer](https://getcomposer.org) (recommended)
 
 ```sh
 composer require gw2treasures/gw2api
 ```
 
+If you haven't included composers autoloader yet,
+you will have to add this before being able to use the GW2 API Wrapper.
+
+```php
+include 'vendor/autoload.php';
+```
+
+### Using the gw2api.phar archive
+
+You need to download the [latest gw2api.phar](https://github.com/GW2Treasures/gw2api/releases/tag/latest)
+and the [guzzle.phar of the latest 5.x version](https://github.com/guzzle/guzzle/releases/tag/5.3.0) of the
+[guzzle](https://github.com/guzzle/guzzle) library and place both files in your project directory. 
+Now you can include both files to start using the GW2 API wrapper.
+
+```php
+include __DIR__ .  '/gw2api.phar';
+include __DIR__ .  '/guzzle.phar';
+```
+
 ## Examples
 
 ```php

build/.gitignore

@@ -0,0 +1 @@
+artifacts/

build/build.php

@@ -0,0 +1,31 @@
+<?php
+
+// directory paths
+$baseDirectory = realpath(__DIR__.'/..');
+$buildDirectory = $baseDirectory . '/build';
+$artifactsDirectory = $buildDirectory . '/artifacts';
+$stagingDirectory = $artifactsDirectory . '/staging';
+
+// create all needed directories.
+if( !file_exists( $artifactsDirectory )) {
+    mkdir($artifactsDirectory);
+}
+
+// setup packager
+require $baseDirectory . '/vendor/mtdowling/burgomaster/src/Burgomaster.php';
+$packager = new \Burgomaster( $stagingDirectory, $baseDirectory );
+
+// include readme and license files
+foreach(['README.md', 'LICENSE'] as $file) {
+    $packager->deepCopy( $file, $file );
+}
+
+// include source
+$packager->recursiveCopy( 'src', 'GW2Treasures/GW2Api', ['php'] );
+
+// create the autoloader
+$packager->createAutoloader();
+
+// build phar and zip archives
+$packager->createPhar( $buildDirectory . '/artifacts/gw2api.phar');
+$packager->createZip( $buildDirectory . '/artifacts/gw2api.zip');

composer.json

@@ -21,7 +21,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "~4.6",
-        "satooshi/php-coveralls": "dev-master"
+        "satooshi/php-coveralls": "dev-master",
+        "mtdowling/burgomaster": "^0.0.2"
     },
     "autoload": {
         "psr-4": {