Fixing the dependencies in setup.py so as not to annoy Conda

MANIFEST.in

-include *.txt *.ini *.cfg *.rst *.wsgi *.sh *.spec
+include *.txt *.ini *.cfg *.spec
 recursive-include pycapo *.py
-recursive-include doc *
+

setup.py

@@ -12,10 +12,6 @@ with open(os.path.join(HERE, 'CHANGES.txt')) as f:
 with open(os.path.join(HERE, NAME, '_version.py')) as f:
     VERSION = f.readlines()[-1].split()[-1].strip("\"'")
 
-INST_REQUIRES = []
-TEST_REQUIRES = ['pytest==3.0.5']
-SETUP_REQUIRES = ['pytest-runner==2.9']
-
 setup(name=NAME,
       version=VERSION,
       description='CAPO (CASA, Archive, and Pipeline Options) for Python',
@@ -44,9 +40,9 @@ setup(name=NAME,
       include_package_data=True,
       zip_safe=False,
       test_suite='pycapo.tests',
-      install_requires=INST_REQUIRES,
-      tests_require=TEST_REQUIRES,
-      setup_requires=SETUP_REQUIRES,
+      install_requires=[],
+      tests_require=['pytest'],
+      setup_requires=['pytest-runner','pytest'],
       entry_points={
           'console_scripts': [
               'pycapo = pycapo.commands:pycapo'