simple banner for deprecation

scripts/binary-config

@@ -16,7 +16,7 @@ console.log(`Building Begin... (DEPLOY: ${DEPLOY}, BUILD_ALL: ${BUILD_ALL})`)
 let config = {
   name: 'begin',
   bin: {
-    cli: '../src/index.js'
+    cli: '../src/pkg-index.js'
   },
   pkg: {
     // Don't manually include runtimes/deno.js in scripts, as it fails on pkg#997

src/pkg-index.js

@@ -0,0 +1,7 @@
+#! /usr/bin/env node
+
+process.stderr.write('\x1b[41m\x1b[37m\x1b[1m DEPRECATION NOTICE: \x1b[0m \x1b[31m\x1b[1mThe Begin CLI is now available via npm\x1b[0m\n')
+process.stderr.write('\x1b[1mPlease run "npm install -g @begin/deploy" to install the latest version\x1b[0m\n')
+
+const begin = require('./index')
+begin()