error on install

When I ran pip install python-react-v8. I received the following:

Collecting python-react-v8
Using cached python-react-v8-0.1.1.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "", line 1, in
File "/private/var/folders/18/qhlp60bs4_x1lv3gq3dbxj280000gn/T/pip-build-w7vizuls/python-react-v8/setup.py", line 13, in
VERSION = import('react').version
File "/private/var/folders/18/qhlp60bs4_x1lv3gq3dbxj280000gn/T/pip-build-w7vizuls/python-react-v8/react/init.py", line 3, in
from .react import React, set_up
File "/private/var/folders/18/qhlp60bs4_x1lv3gq3dbxj280000gn/T/pip-build-w7vizuls/python-react-v8/react/react.py", line 5, in
from . import utils
File "/private/var/folders/18/qhlp60bs4_x1lv3gq3dbxj280000gn/T/pip-build-w7vizuls/python-react-v8/react/utils.py", line 3, in
from v8cffi import shortcuts
ImportError: No module named 'v8cffi'

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/18/qhlp60bs4_x1lv3gq3dbxj280000gn/T/pip-build-w7vizuls/python-react-v8/

Any idea what i'm doing wrong?