Move the CLI to a different file

package.json

@@ -4,7 +4,7 @@
   "description": "A utility-first CSS framework for rapid UI development.",
   "license": "MIT",
   "bin": {
-    "tailwind": "lib/index.js"
+    "tailwind": "lib/cli.js"
   },
   "contributors": [
     "Adam Wathan <adam.wathan@gmail.com>",

src/cli.js

@@ -6,7 +6,7 @@ import path from 'path'
 import postcss from 'postcss'
 import defaultConfig from './defaultConfig'
 import program from 'commander'
-import tailwind from './tailwind'
+import tailwind from '..'
 
 let splitFileName = filename => {
   return filename.split('.')