Update project setup.
diff --git a/requirements_dev.txt b/requirements_dev.txt
new file mode 100644
index 0000000..9051674
--- /dev/null
+++ b/requirements_dev.txt
@@ -0,0 +1,8 @@
+-e .
+
+coverage
+flake8
+mock
+pylint
+pytest
+git+git://github.com/pre-commit/pre-commit#egg=pre_commit