Adds CLI for rendering mermaid files

bin/mermaid.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+
+var fs = require('fs')
+  , chalk = require('chalk')
+  , error = chalk.bold.red
+  , cli = require('../lib/cli.js')
+  , lib = require('../lib')
+
+cli.parse(process.argv.slice(2), function(err, message, options) {
+  if (err) {
+    console.error(
+      error('\nYou had errors in your syntax. Use --help for further information.')
+    )
+    err.forEach(function (e) {
+      console.error(e.message)
+    })
+
+    return
+  }
+  else if (message) {
+    console.log(message)
+
+    return
+  }
+
+  lib.process(options.files, options)
+})