Add message of 3.0.2.md

Author: naokazuterada

messages.json

@@ -22,5 +22,6 @@
   "2.7.2": "messages/2.7.2.md",
   "2.7.3": "messages/2.7.3.md",
   "3.0.0": "messages/3.0.0.md",
-  "3.0.1": "messages/3.0.1.md"
+  "3.0.1": "messages/3.0.1.md",
+  "3.0.2": "messages/3.0.2.md"
 }

messages/3.0.2.md

@@ -0,0 +1,13 @@
+# MarkdownTOC - 3.0.2
+
+---
+
+**NOTE: 3.x has "breacking chnages"**
+
+If you are using 3.x for the first time and have any problems, please check [Upgrade Guide](https://github.com/naokazuterada/MarkdownTOC/releases/tag/3.0.0) at first.
+
+---
+
+## Changes
+
+- Fix errors when User Settings file is empty or not exist Ref: [#122](https://github.com/naokazuterada/MarkdownTOC/issues/122#issuecomment-375855044)