modified readme.md

Author: Kazuaki NAKAMURA

readme.md

@@ -13,10 +13,6 @@ $ sh setup.sh
     - [zsh-users/zsh-completions](https://github.com/zsh-users/zsh-completions)
     - [zsh-users/zsh-autosuggestions](https://github.com/zsh-users/zsh-autosuggestions)
     - [zsh-users/zsh-syntax-highlighting](https://github.com/zsh-users/zsh-syntax-highlighting)
-- [nodenv/nodenv](https://github.com/nodenv/nodenv)
-    - [nodenv/node-build](https://github.com/nodenv/node-build)
-- [rbenv/rbenv](https://github.com/rbenv/rbenv)
-    - [rbenv/ruby-build](https://github.com/rbenv/ruby-build)
-- [yyuu/pyenv](https://github.com/yyuu/pyenv)
-- [tokuhirom/plenv](https://github.com/tokuhirom/plenv)
-    - [tokuhirom/Perl-Build](https://github.com/tokuhirom/Perl-Build)
+
+- References
+  - https://qiita.com/yutkat/items/c6c7584d9795799ee164#dotfilesの使い方