Replaced 'fs' w/ graceful-fs. Fixes #888 (#889)

app.js

@@ -4,12 +4,17 @@
 var gmeConfig = require('./config'),
     webgme = require('webgme'),
     path = require('path'),
+    fs = require('fs'),
     rm_rf = require('rimraf'),
+    gracefulFs = require('graceful-fs'),
     myServer;
 
 process.chdir(__dirname);
 webgme.addToRequireJsPaths(gmeConfig);
 
+// Patch the 'fs' module to fix 'too many files open' error
+gracefulFs.gracefulify(fs);
+
 // Clear seed hash info
 ['nn', 'pipeline'].map(lib => path.join(__dirname, 'src', 'seeds', lib, 'hash.txt'))
     .forEach(file => rm_rf.sync(file));

package.json

@@ -19,6 +19,7 @@
     "exists-file": "^2.1.0",
     "express": "^4.14.0",
     "lodash.difference": "^4.1.2",
+    "graceful-fs": "^4.1.10",
     "lodash.merge": "^4.5.1",
     "mongodb": "^2.2.10",
     "nodemon": "^1.9.2",