Add support for the conformance test for objc when run on OS X
diff --git a/.gitignore b/.gitignore
index b0a92f8..19e5212 100644
--- a/.gitignore
+++ b/.gitignore
@@ -103,9 +103,12 @@
 conformance/conformance-cpp
 conformance/conformance-csharp
 conformance/conformance-java
+conformance/conformance-objc
 conformance/conformance-test-runner
 conformance/conformance.pb.cc
 conformance/conformance.pb.h
+conformance/Conformance.pbobjc.h
+conformance/Conformance.pbobjc.m
 conformance/conformance.rb
 conformance/javac_middleman
 conformance/protoc_middleman