Add mkdir option + update README

test/fixtures/mnt.js

@@ -2,12 +2,18 @@ var os = require('os')
 var path = require('path')
 var fs = require('fs')
 
-var mnt = path.join(os.tmpdir(), 'fuse-bindings-' + process.pid + '-' + Date.now())
+function create (opts = {}) {
+  var mnt = path.join(os.tmpdir(), 'fuse-bindings-' + process.pid + '-' + Date.now())
 
-try {
-  fs.mkdirSync(mnt)
-} catch (err) {
-  // do nothing
+  if (!opts.doNotCreate) {
+    try {
+      fs.mkdirSync(mnt)
+    } catch (err) {
+      // do nothing
+    }
+  }
+
+  return mnt
 }
 
-module.exports = mnt
+module.exports = create