reorganize setup.py

Author: kmaehashi

setup.py

@@ -31,12 +31,12 @@ def _read(filename):
           'Programming Language :: Python :: 3.6',
       ],
       packages=find_packages(exclude=['atwiki.test']),
+      test_suite = 'atwiki.test',
       entry_points={
           'console_scripts': ['atwiki-dump=atwiki.tools.dump:main'],
       },
       install_requires=[
           'BeautifulSoup4',
           'html5lib',
       ],
-      test_suite = 'atwiki.test',
 )