Merge pull request #360 from simphony/fix-flake

Choosing a version less than 3

appveyor-install.cmd

@@ -6,16 +6,8 @@ pip install numpy
 rem builds currently fail
 rem pip install numexpr
 rem pip install tables >= 3.1.1
-pip install enum34>=1.0.4
-pip install stevedore>=1.2.0
-pip install click>=3.3
-pip install pyyaml>=3.11
-pip install sphinx>=1.3.1
-pip install tabulate>=0.7.4
-pip install mock==1.0.1
-pip install coverage
-pip install flake8
-pip install hypothesis
+pip install -r dev_requirements.txt
+
 
 rem install simphony-common 
 python setup.py develop

dev_requirements.txt

@@ -7,6 +7,6 @@ sphinx >= 1.3.1
 tabulate >= 0.7.4
 mock==1.0.1
 coverage
-flake8
+flake8<3
 numpy >= 1.4.1
 hypothesis