bumped interface and requirements to php7

Author: Nikita Sapogov

README.md

@@ -31,7 +31,7 @@ class DummyObject implements ToArrayInterface {
     *
     * @return array
     */
-   public function toArray() {
+   public function toArray(): array {
       return array(
       	'hash' => sha1(time())
       );

composer.json

@@ -19,6 +19,6 @@
 		}
 	},
 	"require": {
-		"php": ">=5.0"
+		"php": ">=7.0"
 	}
 }

src/ToArrayInterface.php

@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 namespace Imponeer;
 
@@ -7,12 +8,10 @@
  */
 interface ToArrayInterface
 {
-
 	/**
 	 * Converts object to array
 	 *
 	 * @return array
 	 */
-	public function toArray();
-
-}
+	public function toArray(): array;
+}