add pull request API

there are a few little issues remaining.  Mostly regarding handling
meaningful non-20x response codes

1 files changed, 20 insertions, 0 deletions

diff --git a/pygithub3/resources/pull_requests.py b/pygithub3/resources/pull_requests.py
new file mode 100644
index 0000000..1fe2623
--- /dev/null
+++ b/pygithub3/resources/pull_requests.py
@@ -0,0 +1,20 @@
+from .base import Resource
+
+
+class PullRequest(Resource):
+    _dates = ('created_at', 'updated_at', 'closed_at', 'merged_at')
+
+    def __str__(self):
+        return '<PullRequest (%s)>' % getattr(self, 'title', '')
+
+
+class File(Resource):
+    def __str__(self):
+        return '<File (%s)>' % getattr(self, 'filename', '')
+
+
+class Comment(Resource):
+    _dates = ('created_at', 'updated_at')
+
+    def __str__(self):
+        return '<Comment (#%s)>' % getattr(self, 'id', '')