Update SECURITY.md

Author: ToMGitHubN

SECURITY.md

@@ -2,20 +2,15 @@
 
 ## Supported Versions
 
-Use this section to tell people about which versions of your project are
-currently being supported with security updates.
+プログラムの分量は少ないので、セキュリティ問題があってもライブラリで発生すると思います。
+npmインストール時にライブラリが古いなどの警告が出た場合は、内容にしたがって修正してください。
 
 | Version | Supported          |
 | ------- | ------------------ |
-| 5.1.x   | :white_check_mark: |
-| 5.0.x   | :x:                |
-| 4.0.x   | :white_check_mark: |
-| < 4.0   | :x:                |
+| 1.0.x   | :white_check_mark: |
+| < 1.0   | :x:                |
 
 ## Reporting a Vulnerability
 
-Use this section to tell people how to report a vulnerability.
-
-Tell them where to go, how often they can expect to get an update on a
-reported vulnerability, what to expect if the vulnerability is accepted or
-declined, etc.
+Please report in issue.
+(issueで報告頂ければ対応します。)