Fix examples/chat/chat.py. Extract test requirements to .travis.yaml file.

.travis.yml

@@ -4,11 +4,11 @@ python:
   - "3.6"
 
 install:
-  - pip install codecov pytest pytest-cov
+  - pip install codecov pytest pytest-cov pytest-asyncio pylint
   - python setup.py develop
 
 script:
-  - py.test --cov=./libp2p tests/
+  - pytest --cov=./libp2p tests/
   - pylint --rcfile=.pylintrc libp2p tests
 
 after_success:

examples/chat/chat.py

@@ -1,15 +1,10 @@
-#!/usr/bin/env python3
 import asyncio
 import sys
-from os.path import abspath, dirname
 
 import click
 
-from libp2p.libp2p import *
-from network.multiaddr import MultiAddr
-from peer.peerinfo import info_from_p2p_addr
-
-sys.path.append(dirname(dirname(dirname(abspath(__file__)))))
+from libp2p import new_node
+from libp2p.peer.peerinfo import info_from_p2p_addr
 
 
 PROTOCOL_ID = '/chat/1.0.0'

setup.py

@@ -17,10 +17,7 @@ setuptools.setup(
     platforms=["unix", "linux", "osx"],
     classifiers=classifiers,
     install_requires=[
-        "pylint",
-        "pytest",
         "pycryptodome",
-        "pytest-asyncio",
         "click",
         "base58",
         "pymultihash",