Minor formatting changes.

setup.py

@@ -41,7 +41,7 @@ setup(
     zip_safe=False,
     dependency_links = [
         "git+https://gitlab.mpcdf.mpg.de/ift/keepers.git#egg=keepers-0.1.1"],
-    install_requires = ["keepers>=0.1.1"],
+    install_requires=['keepers>=0.1.1'],
     long_description=read('README.rst'),
     license = "GPLv3",
     classifiers=[
@@ -50,4 +50,5 @@ setup(
         "License :: OSI Approved :: GNU General Public License v3 "
         "or later (GPLv3+)"
     ],
-)
+)
\ No newline at end of file
+