Merge pull request #2 from langleyfoxall/fix/double-api-on-base-uri

Allow for /api to be present in base URI

src/Http/Request.php

@@ -195,7 +195,7 @@ protected function url()
         $baseUri = substr($baseUri, strlen($baseUri) - 1) === '/' ? substr($baseUri, 0, -1) : $baseUri;
 
         // Add suffix
-        $baseUri = substr($baseUri, strlen($baseUri) - 1) !== '/api' ? $baseUri . '/api' : $baseUri;
+        $baseUri = substr($baseUri, strlen($baseUri) - 4) !== '/api' ? $baseUri . '/api' : $baseUri;
 
         return $baseUri . $endpoint;
     }