add verbose to cli

lib/utils/verbose.js

@@ -0,0 +1,15 @@
+var argv = require('optimist').argv
+
+const isVerbose = argv.verbose || false
+const verbose = isVerbose ? verboseConsole : () => { };
+
+module.exports = {
+  verbose,
+  isVerbose
+}
+
+function verboseConsole() {
+  if (isVerbose) {
+    console.log.apply(console, arguments)
+  }
+}