Update readme

Author: davidpdrsn

README.md

@@ -12,13 +12,6 @@ It uses the [`serde_json::Value`] type to represent JSON.
 [`serde_json::Value`]: https://docs.serde.rs/serde_json/value/enum.Value.html
 [`assert_eq!`]: https://doc.rust-lang.org/std/macro.assert_eq.html
 
-### Install
-
-```toml
-[dependencies]
-assert-json-diff = "1"
-```
-
 ### Partial matching
 
 If you want to assert that one JSON value is "included" in another use