remove node_modules and .gitignore them

node_modules/es5-ext/object/keys/implement.js

@@ -1,10 +0,0 @@
-"use strict";
-
-if (!require("./is-implemented")()) {
-	Object.defineProperty(Object, "keys", {
-		value: require("./shim"),
-		configurable: true,
-		enumerable: false,
-		writable: true
-	});
-}

node_modules/es5-ext/object/keys/index.js

@@ -1,3 +0,0 @@
-"use strict";
-
-module.exports = require("./is-implemented")() ? Object.keys : require("./shim");

node_modules/es5-ext/object/keys/is-implemented.js

@@ -1,10 +0,0 @@
-"use strict";
-
-module.exports = function () {
-	try {
-		Object.keys("primitive");
-		return true;
-	} catch (e) {
-		return false;
-	}
-};

node_modules/es5-ext/object/keys/shim.js

@@ -1,7 +0,0 @@
-"use strict";
-
-var isValue = require("../is-value");
-
-var keys = Object.keys;
-
-module.exports = function (object) { return keys(isValue(object) ? Object(object) : object); };