Use camel case for all trait attribute names

src/GeoIP2/Model/Country.php

@@ -34,6 +34,6 @@ class Country
   {
 	if ($var != "instance" && isset($this->$var)) return $this->$var;
 
-    throw new RuntimeException("Unknown attribute: $attr");
+    throw new \RuntimeException("Unknown attribute: $attr");
   }
 }

src/GeoIP2/Model/Omni.php

@@ -5,7 +5,4 @@ namespace GeoIP2\Model;
 class Omni extends CityISPOrg
 {
 
-  public function __construct($raw, $language) {
-
-  }
 }