ruby: disabling fstat after pipe created

This is temporary fix until #519 closed.

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
node-express-example: add Capstanfile

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
add a native code example

Signed-off-by: Takaaki Fukai <deep.wiki@gmail.com>
Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>