Merge pull request nficano#107 from AndySun25/master

Fixed installation of futures on python3

Author: nficano

requirements.txt

@@ -2,7 +2,6 @@ boto3==1.4.4
 botocore==1.5.62
 click==6.6
 docutils==0.12
-futures==3.0.5
 jmespath==0.9.0
 pyaml==15.8.2
 python-dateutil==2.5.3

setup.py

@@ -13,12 +13,11 @@
     'requirements.txt', session=pip.download.PipSession(),
 )
 
+pip_requirements = [str(r.req) for r in requirements]
+
 # Only install futures package if using a Python version <= 2.7
-if sys.version_info[0] == 2:
-    pip_requirements = [str(r.req) for r in requirements]
-else:
-    pip_requirements = [str(r.req)
-                        for r in requirements if 'futures' not in str(r.req)]
+if sys.version_info < (3, 0):
+    pip_requirements.append('futures')
 
 test_requirements = [
     # TODO: put package test requirements here