add **/build/ and ycm stuff

sarrow104 · sarrow104 · commit 34ef42e05667 · 2016-08-31T09:29:38.000+08:00
diff --git a/.gitignore b/.gitignore
@@ -5,3 +5,9 @@
 third_party/gtest/*
 libgo/cmake_config.h
 vs_proj/vs201*
+tools/libgo.conf
+
+.ycm_extra_conf.py
+.ycm_extra_conf.pyc
+build/
+tutorial/build/
