Add newlines at ends of files

gm/gm-tests.ts

@@ -365,4 +365,4 @@ gm(src).toBuffer(format, (err, buffer) => {
 var imageMagick = gm.subClass({ imageMagick: true });
 var readStream = imageMagick(src)
 	.adjoin()
-	.stream();
+	.stream();

gm/gm.d.ts

@@ -620,4 +620,4 @@ declare module "gm" {
 	}
 
 	export = m;
-}
+}