Allow installation for python 3.6

Author: EmilioPeJu

setup.cfg

@@ -17,7 +17,7 @@ classifiers =
 
 [options]
 packages = softioc
-python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*
+python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*
 
 [options.entry_points]
 # Include a command line script