Adjust cli

cli.js

@@ -50,13 +50,15 @@ const getConfig = conf => {
 }
 
 const cli = meow(`
-  Usage
+  ${chalk.magenta('[mdx-deck]')}
 
-    $ mdx-deck deck.mdx
+  ${chalk.gray('Usage')}
 
-    $ mdx-deck build deck.mdx
+    $ ${chalk.magenta('mdx-deck deck.mdx')}
 
-  Options
+    $ ${chalk.magenta('mdx-deck build deck.mdx')}
+
+  ${chalk.gray('Options')}
 
     -p --port   Dev server port
 

package.json

@@ -9,6 +9,7 @@
   "scripts": {
     "prepare": "babel src -d dist",
     "start": "./cli.js docs/index.mdx -p 8989",
+    "help": "./cli.js",
     "build": "./cli.js build docs/index.mdx -d site"
   },
   "keywords": [],