Update README.md

Author: codingseb

README.md

@@ -1,6 +1,8 @@
 # CSharpRegexTools4Npp
 Some tools for using C# Regex in Notepad++ (As Notepad++ Plugin)
 
+**For now x64 version have some bugs and is unstable**
+
 ## Features
 * Syntax Highlight of the C# Regex
 * List all matches (With groups and captures)