Add deprecated as status and in readme

Apparently badge doesn't show in ui. So I needed to add in readme too

Author: ali-behjati

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyth-client"
-version = "0.5.0"
+version = "0.5.1"
 authors = ["Pyth Data Foundation"]
 edition = "2018"
 license = "Apache-2.0"
@@ -10,6 +10,9 @@ description = "pyth price oracle data structures and example usage"
 keywords = [ "pyth", "solana", "oracle" ]
 readme = "README.md"
 
+[badges]
+maintenance = { status = "deprecated" }
+
 [features]
 test-bpf = []
 no-entrypoint = []

README.md

@@ -1,5 +1,7 @@
 # Pyth Client
 
+**This crate has deprecated. Please use [pyth-sdk-solana](https://github.com/pyth-network/pyth-sdk-rs/tree/main/pyth-sdk-solana) instead.**
+
 This crate provides utilities for reading price feeds from the [pyth.network](https://pyth.network/) oracle on the Solana network.
 The crate includes a library for on-chain programs and an off-chain example program.