include node_modules so release .zip is deployable

node_modules/es5-ext/math/sign/implement.js

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

node_modules/es5-ext/math/sign/index.js

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

node_modules/es5-ext/math/sign/is-implemented.js

@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function () {
+	var sign = Math.sign;
+	if (typeof sign !== "function") return false;
+	return sign(10) === 1 && sign(-20) === -1;
+};

node_modules/es5-ext/math/sign/shim.js

@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function (value) {
+	value = Number(value);
+	if (isNaN(value) || value === 0) return value;
+	return value > 0 ? 1 : -1;
+};