spec: Test whether ffi works

spec/modules-spec.coffee

@@ -22,6 +22,10 @@ describe 'third-party module', ->
           assert.equal msg, 'ok'
           done()
 
+    describe 'ffi', ->
+      it 'does not crash', ->
+        require 'ffi'
+
   describe 'q', ->
     Q = require 'q'
 

spec/package.json

@@ -5,6 +5,7 @@
   "version": "0.1.0",
   "devDependencies": {
     "basic-auth": "^1.0.0",
+    "ffi": "2.0.0",
     "formidable": "1.0.16",
     "graceful-fs": "3.0.5",
     "mocha": "2.1.0",