No Module Named neo4j in Travis-CI integrated with Python Django - django

Question

I have built a small python application in Django framework, with Neo4j database hosted on Graphene db. I am integrating Travis-CI for continuous integration with the application on github, however, I am stuck on getting an error in Travis like: ImportError: No module named 'neo4j'
Below is my .travis.yml file:
language: python
python:
- "3.4"
- "2.7"
# command to install dependencies
install:
- pip install -q Django==$DJANGO_VERSION
- pip install py2neo
- pip install neo4django
- pip install -r requirements.txt
# command to run tests
script: python eb_django_app/neo4j/manage.py test
env:
- DJANGO_VERSION=1.8.3
branches:
only:
- master
manage.py :
import os
import sys
from py2neo import neo4j
from py2neo import ServiceRoot
graphenedb_url = os.environ.get("graphene db url", "http://localhost:7474/")
graph = ServiceRoot(graphenedb_url).graph
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "neo4j.settings")
from django.core.management import execute_from_command_line
execute_from_command_line(sys.argv)
The folder structure of python application is:
eb_django_app
|_ .travis.yml
|_ requirements.txt
|_ eb_django_app
|_python codebase
|_manage.py
|_neo4j
|_manage.py
|_tests.py
I am new to both Travis and Python. Am i missing something? Can someone please help me out with a solution to resolve this error, would really appreciate some immediate response?