[DR] Feat: Update README.md

README.md

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+# DNS resolver
+
+[![Build Status](https://github.com/da0p/dns_resolver/actions/workflows/ci.yml/badge.svg)](https://github.com/dns_resolver/dns_resolver/actions)
+
+Resolving a host name following [RFC-1035](https://datatracker.ietf.org/doc/html/rfc1035)
+
+# Installation
+
+- Download or clone the project
+- In the project directory, run
+```rust
+cargo build
+```
+- In order to resolve a host name, run
+```rust
+cargo run -- HOST_NAME
+```
+- In order to run the test
+```rust
+cargo test
+```