use py.test for testing
correct cffi dependency to setup_requires
ignore cffi, pycparser and pytest egg directories
add myself to AUTHORS.rst
diff --git a/.gitignore b/.gitignore
index 2bf40e7..886683e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,6 @@
 .tox/
 *.egg-info/
 .coverage
+cffi-*.egg/
+pycparser-*.egg/
+pytest-*.egg/