Fix python2 version building

Author: dolfinus

.travis.yml

@@ -1,11 +1,17 @@
 language: python
 python:
+- '2.7'
+- '3.4'
+- '3.5'
+- '3.6'
 - '3.7'
+- '3.8'
 install:
 - pip install flake8
 script:
 - flake8 --count
-before_deploy: python setup.py sdist bdist_wheel
+- python setup.py bdist_wheel
+before_deploy: python setup.py sdist
 deploy:
   - provider: pypi
     user: dolfinus

setup.py

@@ -22,7 +22,13 @@
         'Framework :: Setuptools Plugin',
         'Intended Audience :: Developers',
         "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
+        "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],