dynamic install typing if python 3.4

.travis.yml

 install:
   - python setup.py develop
   - pip install -e ."[test]"
-  - pip install typing
 
 script: 
   - pytest --cov=hapic tests

setup.py

 from setuptools import setup
 from setuptools import find_packages
 from os import path
+import sys
 
 here = path.abspath(path.dirname(__file__))
 
     'requests',
 ] + tests_require
 
+
+# Python 3.4 require
+if sys.version_info.major == 3 and sys.version_info.minor == 4:
+    install_requires.append('typing')
+
 setup(
     name='hapic',