gitignore: add .version

Change-Id: Ib75781b5d473921b42936e4d3c441e6a520b9108
diff --git a/.gitignore b/.gitignore
index 581b08f..fc567db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,6 +38,7 @@
 .deps
 .libs
 .dirstamp
+.version
 *~
 Makefile
 config.log