Fix setup script (#22)

Author: alekna

.travis.yml

@@ -5,8 +5,8 @@ python:
   - "3.5"
 
 env:
-  - PENDULUM_EXTENSIONS=true
-  - PENDULUM_EXTENSIONS=false
+  - PENDULUM_EXTENSIONS=1
+  - PENDULUM_EXTENSIONS=0
 
 before_install:
   - pip install codecov

setup.py

@@ -24,17 +24,14 @@ def get_version():
 __version__ = get_version()
 
 # C Extensions
-with_extensions = os.environ.get('PENDULUM_EXTENSIONS', '')
+with_extensions = os.getenv('PENDULUM_EXTENSIONS', False)
 
-if with_extensions.lower() == 'false':
-    with_extensions = False
-else:
+if with_extensions == '1':
     with_extensions = True
 
 if hasattr(sys, 'pypy_version_info'):
     with_extensions = False
 
-
 extensions = []
 if with_extensions:
     try:

tox.ini

@@ -6,8 +6,8 @@ deps = -rtests-requirements.txt
 commands = py.test tests -sq
 
 setenv =
-    without-extensions: PENDULUM_EXTENSIONS=false
-    with-extensions: PENDULUM_EXTENSIONS=true
+    without-extensions: PENDULUM_EXTENSIONS=0
+    with-extensions: PENDULUM_EXTENSIONS=1
 
 [testenv:flake8]
 basepython=python