Adding forced parameter seperator on http_build_query

.gitignore

@@ -0,0 +1 @@
+.idea

src/OAuth2/Provider.php

@@ -194,8 +194,21 @@ public function access($code, $options = array())
  {
  case 'GET':
  // Need to switch to Request library, but need to test it on one that works
- $url .= '?'.http_build_query($params);
- $response = file_get_contents($url);
+ $url .= '?'.http_build_query($params, '', '&');
+
+ // make request
+ $ch = curl_init();
+ curl_setopt($ch, CURLOPT_URL, $url);
+ curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+ $response = curl_exec($ch);
+
+ // handle error; error output
+ if(curl_getinfo($ch, CURLINFO_HTTP_CODE) !== 200) {
+ curl_error($ch);
+ Throw new \Exception('Something went wrong with oAuth2 Provider: ' . $response);
+ }
+
+ curl_close($ch);
 
  parse_str($response, $return);
  break;
@@ -239,4 +252,4 @@ public function access($code, $options = array())
 
  }
 
-}
+}