Update requirements

Given that this is a library installed with pip, and that `install_requires` specified the package dependencies, I think it is most useful for `requirements.txt` to specify development and testing dependencies.
postmen · Nov 21, 2017 · c588763 · c588763
1 parent 2bac947
commit c588763
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,3 @@
-requests==2.7.0
-python-dateutil==2.4.2
-six==1.9.0
 setuptools-scm>=1.15.0
+responses>=0.5.1
+pytest