Add @pepyakin as a bindgen reviewer

🎉🎉🎉
servo · bors-servo · Oct 2, 2017 · Oct 2, 2017 · Oct 2, 2017 · d94b1feb3960e68592ef46b587ef3e6a9347e1c0
commit d94b1feb3960e68592ef46b587ef3e6a9347e1c0
diff --git a/homu/files/cfg.toml b/homu/files/cfg.toml
@@ -51,7 +51,7 @@ secret = "{{ secrets['web-secret'] }}"
     "osmesa-src": {},
     "rust-azure": {},
     "rust-bindgen": {
-        "extra_reviewers": [ "fitzgen" ],
+        "extra_reviewers": [ "fitzgen", "pepyakin" ],
         "owner": "rust-lang-nursery",
     },
     "rust-cssparser": {},