Remove deprecated dependency exists-sync (#160)

Author: Bartheleway

index.js

@@ -7,7 +7,7 @@ const UnwatchedDir = require('broccoli-source').UnwatchedDir;
 const mergeTrees = require('broccoli-merge-trees');
 const defaults = require('lodash.defaults');
 const funnel = require('broccoli-funnel');
-const existsSync = require('exists-sync');
+const fs = require('fs');
 const stew = require('broccoli-stew');
 const concat = require('broccoli-concat');
 const chalk = require('chalk');
@@ -170,7 +170,7 @@ module.exports = {
             return false;
           }
 
-          if (!existsSync(momentPath + '/locale/' + locale + '.js')) {
+          if (!fs.existsSync(momentPath + '/locale/' + locale + '.js')) {
             this.ui.writeLine(
               chalk.red(
                 'ember-cli-moment-shim: Specified locale `' +

package.json

@@ -37,7 +37,6 @@
     "broccoli-stew": "^1.5.0",
     "chalk": "^1.1.3",
     "ember-cli-import-polyfill": "^0.2.0",
-    "exists-sync": "^0.0.4",
     "lodash.defaults": "^4.2.0",
     "moment": "^2.19.3",
     "moment-timezone": "^0.5.13"