fix: When create a snippet of which completion scope of a snippet is "Function or Mehtod", it will not result in a code completion in XCode. According to Apple's snippet file, when you create a snippet with "Function or Mehtod" style, the output file's "IDECodeSnippetCompletionScopes" is "CodeBlock". When I replace the value for this key, there would be a code completion in Xcode.

Author: XVXVXXX

lib/xcodesnippet/commands/install.rb

@@ -58,6 +58,9 @@ def extract_front_matter!
     @snippet.title = front_matter["title"] || ""
     @snippet.summary = front_matter["summary"] || ""
     @snippet.completion_scopes = [front_matter["completion-scope"]] || front_matter["completion-scopes"] || "All"
+    @snippet.completion_scopes.collect! { |var|
+      var ==  "Function or Method" ? "CodeBlock" : variable
+    }
     @snippet.identifier = SecureRandom.uuid().upcase
     @snippet.is_user_snippet = true
     @snippet.version = 0