README.md in ripper_tree-0.1.1 vs README.md in ripper_tree-0.1.2

@@ -29,13 +29,13 @@
 result
 
 ```ruby
 :program
  └──── :binary
-         ├──── :@int [1] 1:0
+         ├──── :@int ["1"] 1:0
          ├──── :+
-         └──── :@int [1] 1:4
+         └──── :@int ["1"] 1:4
 ```
 
 if use in ruby code.
 
 ```rb
@@ -62,11 +62,11 @@
       [:string_content, [:@tstring_content, "hello world", [1, 6]]]]],
     false]]]]
 
 :program
  └──── :command
-         ├──── :@ident [puts] 1:0
+         ├──── :@ident ["puts"] 1:0
          └──── :args_add_block
                  ├──── :string_literal
                  │       └──── :string_content
                  │               └──── :@tstring_content ["hello world"] 1:6
                  └──── false
@@ -81,15 +81,15 @@
 result
 
 ```ruby
 :program
  └──── :binary
-         ├──── :@int [1] 1:0
+         ├──── :@int ["1"] 1:0
          ├──── :+
          └──── :binary
-                 ├──── :@int [2] 1:2
+                 ├──── :@int ["2"] 1:2
                  ├──── :*
-                 └──── :@int [3] 1:4
+                 └──── :@int ["3"] 1:4
 ```
 
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/siman-man/ripper_tree. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.