diff --git a/_config.yml b/_config.yml
index ddeb671..5f32ce2 100644
--- a/_config.yml
+++ b/_config.yml
@@ -1 +1,2 @@
+# theme
 theme: jekyll-theme-time-machine
\ No newline at end of file
diff --git a/appveyor.yml b/appveyor.yml
index 5727ad5..5d5281e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,3 +1,5 @@
+# ignore it , it is valid on windows platform.
+
 # Specify version format
 version: "0.18.{build}"