use chokidar instead of watch

lib/index.js

@@ -3,7 +3,7 @@ var parse = require('shell-quote').parse;
 var path = require('path');
 var rc = require('rc');
 var spawn = require('child_process').spawn;
-var watch = require('watch');
+var chokidar = require('chokidar');
 
 module.exports.tend = function(dir, rawCommand, options) {
   options = options || {};
@@ -46,16 +46,20 @@ module.exports.tend = function(dir, rawCommand, options) {
     console.log(('Process ' + pid + ' Started').green);
   }.bind(this);
 
-  if(options.start){
+  if (options.start) {
     startCommand();
   }
 
-  if(options.runOnce){
+  if (options.runOnce) {
     return;
   }
 
-  watch.watchTree(dir, function(f, curr, prev) {
-    if (curr === null && prev === null) {
+  var ignoreEvents = ['add', 'addDir'];
+  chokidar.watch(dir, {
+      persistent: true
+    })
+    .on('all', function(e, f) {
+    if (~ignoreEvents.indexOf(e)) {
       return;
     }
     if (ignoreHidden) {
@@ -64,6 +68,7 @@ module.exports.tend = function(dir, rawCommand, options) {
         return;
       }
     }
+
     if (!filter.test(f)) {
       return;
     }