chore(*): add migration warning for old package

Author: elboman

migrate/migrate.json

@@ -0,0 +1,4 @@
+{
+  "old": "ui-router-react",
+  "new": "@uirouter/react"
+}

migrate/migratewarn.js

@@ -0,0 +1,12 @@
+#!env node
+"use strict";
+
+var pkg = require('../package.json');
+var migrate = require('./migrate.json');
+
+if (pkg.name === migrate.old) {
+  var warning = 'WARNING! this npm package "' + migrate.old + '" has been renamed to "' + migrate.new + '".  Please update your package.json';
+  var warning2 = 'See https://ui-router.github.io/blog/uirouter-scoped-packages/ for details.';
+  console.log("\x1b[1m\x1b[37m\x1b[41m%s\x1b[0m", warning);
+  console.log("\x1b[1m\x1b[37m\x1b[41m%s\x1b[0m", warning2);
+}

package.json

@@ -12,7 +12,8 @@
     "build": "npm run clean && tsc && tsc -m es6 --outDir lib-esm && cross-env NODE_ENV=production webpack",
     "clean": "shx rm -rf _bundles lib lib-esm build",
     "docs": "./scripts/docs.js",
-    "package": "npm run build"
+    "package": "npm run build",
+    "install": "node migrate/migratewarn.js"
   },
   "homepage": "https://ui-router.github.io/react",
   "contributors": [