Make update notifications work again (#610)

* Revert "Disable update-notifier (#609)"

This reverts commit b7a8f23475.

* pkg@3.0.6

* output 'please update' for both npm and non-npm install

bin/now.js

@@ -26,14 +26,19 @@ try {
 // Utilities
 const pkg = require('../lib/pkg')
 
-if (!process.pkg) {
+if (process.pkg) {
   const notifier = updateNotifier({ pkg })
   const update = notifier.update
 
   if (update) {
     let message = `Update available! ${chalk.red(update.current)} → ${chalk.green(update.latest)} \n`
-    message += `Run ${chalk.magenta('npm i -g now')} to update!\n`
-    message += `${chalk.magenta('Changelog:')} https://github.com/zeit/now-cli/releases/tag/${update.latest}`
+    message += `${chalk.magenta('Changelog:')} https://github.com/zeit/now-cli/releases/tag/${update.latest}\n`
+
+    if (pkg._npmPkg) {
+      message += `Run ${chalk.magenta('npm i -g now')} to update!`
+    } else {
+      message += `Please download binaries from https://zeit.co/download`
+    }
 
     notifier.notify({ message })
   }

lib/pkg.js

@@ -1,10 +1,13 @@
 /* eslint-disable import/no-unresolved */
 
-let pkg
+const path = require('path')
+const pkg = require('../package.json')
+
 try {
-  pkg = require('../package.json')
+  const distDir = path.dirname(process.execPath)
+  pkg._npmPkg = require(path.join(distDir, '../../package.json'))
 } catch (err) {
-  pkg = require('../../package.json')
+  pkg._npmPkg = null
 }
 
 module.exports = pkg

package.json

@@ -94,7 +94,7 @@
     "ms": "2.0.0",
     "node-fetch": "1.7.0",
     "ora": "1.2.0",
-    "pkg": "3.0.5",
+    "pkg": "3.0.6",
     "prettier": "1.3.1",
     "printf": "0.2.5",
     "progress": "2.0.0",