fix python_paths path
update setup.py for py.test version conflict
open application argument by  dictionary

- whose keys become separate keyword arguments and the values become
values of these arguments.
all capabilities handle by appium
http://appium.io/slate/en/master/?python#appium-server-capabilities
 fix switch_application and add some test cases
config pytest for test_*.py only
rm  __pycache__ by 'make clean_pc'
1.2.0