exclude rpy2==3.1 for python3.5 for now

setup.py

@@ -16,7 +16,6 @@
     'fcsparser',
     'tables',
     'h5py',
-    'rpy2>=3.0',
     'coverage',
     'coveralls',
     'parameterized',
@@ -33,9 +32,9 @@
 if sys.version_info[:2] < (3, 5):
     raise RuntimeError("Python version >=3.5 required.")
 elif sys.version_info[:2] < (3, 6):
-    test_requires += ['matplotlib>=3.0,<3.1']
+    test_requires += ['matplotlib>=3.0,<3.1', 'rpy2>=3.0,<3.1']
 else:
-    test_requires += ['matplotlib>=3.0']
+    test_requires += ['matplotlib>=3.0', 'rpy2>=3.0']
 
 version_py = os.path.join(os.path.dirname(
     __file__), 'scprep', 'version.py')
@@ -47,7 +46,7 @@
 setup(name='scprep',
       version=version,
       description='scprep',
-      author='Jay Stanley, Scott Gigante, and Daniel Burkhardt, Krishnaswamy Lab, Yale University',
+      author='Scott Gigante, Daniel Burkhardt and Jay Stanley, Yale University',
       author_email='krishnaswamylab@gmail.com',
       packages=find_packages(),
       license='GNU General Public License Version 2',