Update to work with API keys

Author: Jleagle

README.md

@@ -2,6 +2,12 @@
 
 A package to retrieve movies and TV information from IMDB using the API at omdbapi.com
 
+Now that OMDB requires an API key you can set it using:
+
+```php
+Imdb::setApiKey('xxx');
+```
+
 Retrieve full movie details, if you know the name or ID of the movie:
 
 ```php

composer.json

@@ -18,10 +18,10 @@
   ],
   "require": {
     "php": ">=5.4",
-    "jleagle/curl-wrapper": "~0.1"
+    "jleagle/curl-wrapper": "~1.0.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "~5.0"
+    "phpunit/phpunit": "~6.3.1"
   },
   "autoload": {
     "psr-4": {

src/Imdb.php

@@ -12,6 +12,13 @@ class Imdb
   const TYPE_MOVIE = 'movie';
   const TYPE_SERIES = 'series';
   const TYPE_EPISODE = 'episode';
+  
+  protected static $_apiKey;
+  
+  public static function setApiKey($apiKey)
+  {
+    self::$_apiKey = $apiKey;
+  }
 
   /**
    * @param string $movie
@@ -125,10 +132,16 @@ protected static function isValidId($string)
    */
   protected static function _get($params)
   {
+    if (!self::$_apiKey)
+    {
+      throw new ImdbException('OMDB now requires an API key');
+    }
+    
     $params = array_filter($params);
 
     $params['r'] = 'json';
     $params['v'] = '1';
+    $params['apikey'] = self::$_apiKey;
 
     try
     {