Symlink in VBox npm install

https://github.com/mitchellh/vagrant/issues/713

 npm install --only=production
npm WARN txp-chat-demo@0.0.1 No repository field.
npm ERR! Linux 4.4.0-72-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "install" "--only=production"
npm ERR! node v4.2.6
npm ERR! npm  v3.5.2
npm ERR! path ../mime/cli.js
npm ERR! code EROFS
npm ERR! errno -30
npm ERR! syscall symlink

npm ERR! rofs EROFS: read-only file system, symlink '../mime/cli.js' -> '/mnt/PROJECT/kkk/node_modules/.bin/mime'
npm ERR! rofs This is most likely not a problem with npm itself
npm ERR! rofs and is related to the file system being read-only.
npm ERR! rofs
npm ERR! rofs Often virtualized file systems, or other file systems
npm ERR! rofs that don't support symlinks, give this error.
npm ERR! Linux 4.4.0-72-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "install" "--only=production"
npm ERR! node v4.2.6
npm ERR! npm  v3.5.2
npm ERR! path npm-debug.log.2715141848
npm ERR! code ETXTBSY
npm ERR! errno -26
npm ERR! syscall rename

npm ERR! ETXTBSY: text file is busy, rename 'npm-debug.log.2715141848' -> 'npm-debug.log'
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR!     <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR!     /mnt/PROJECT/TXP-Chat/npm-debug.log