add .gitignore
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..dc8a1dd
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+Makefile.in
+*.o
+autom4te.cache
+aux_config
+.*.swp
+configure