[cpp] add ignore file
diff --git a/cpp/.gitignore b/cpp/.gitignore
new file mode 100644
index 0000000..62535c7
--- /dev/null
+++ b/cpp/.gitignore
@@ -0,0 +1,6 @@
+.deps
+.libs
+*.la
+*.lo
+Makefile
+Makefile.in