fixed unittest and updated gitignore

.gitignore

@@ -3,3 +3,5 @@ node_modules
 *.sublime-workspace
 *.idea
 dist
+*.DS_Store
+package-lock.json

test/unit/image-editor.js

@@ -20,7 +20,7 @@
             assert.strictEqual(data.width, 400, 'sets image width');
             assert.strictEqual(data.height, 200, 'sets image height');
             assert.strictEqual(data.x, 0, 'sets crop x');
-            assert.equal(data.y, 0.12482117310443483, 'sets crop y');
+            assert.strictEqual(data.y.toFixed(7), 0.12482117310443483.toFixed(7), 'sets crop y');
             done();
         });
     });