Start fixing travis config

.travis.yml

@@ -3,8 +3,6 @@ sudo: false
 language: python
 
 python:
-  - "2.7"
-  - "3.4"
   - "3.5"
   - "3.6"
 

setup.py

@@ -30,11 +30,13 @@ setup(
     setup_requires=[
         "pytest-runner",
     ],
-    tests_require=[
-        "hypothesis",
-        "tox",
-        "pytest",
-    ],
+    extras_require={
+        "tests": [
+            "hypothesis",
+            "tox",
+            "pytest",
+        ],
+    },
     entry_points={"console_scripts": [
         "daphne = daphne.cli:CommandLineInterface.entrypoint",
     ]},

tox.ini

@@ -1,10 +1,10 @@
 # We test against the oldest supported Twisted release, and the current release.
 [tox]
-envlist = py{27,34,35,36}-twisted-{old,new}
+envlist = py{35,36}-twisted-{old,new}
 
 [testenv]
 deps =
     twisted-old: twisted==17.1.0
 commands =
     pip install -e .[tests]
-    python -m unittest discover
+    pytest