added link to the cargo-near-new-project-template and remove not-actu…

…al information

README.md

@@ -63,6 +63,11 @@ impl StatusMessage {
 }
 ```
 
+## Github Codespaces template
+* Quick start your project with the [template repository](https://github.com/near/cargo-near-new-project-template) generated by `cargo near new` command
+* The associated [template repository](https://github.com/near/cargo-near-new-project-template)'s README contains a `Code > Codespaces > Create codespace on main` screenshot.
+* Clicking the button will result in using [Github Codespaces devcontainer](https://docs.github.com/en/codespaces). The containers allow you to start building without the need to install any dependencies on your machine and provide the actual version.
+
 ## Features
 
 ### Unit-testable
@@ -288,12 +293,6 @@ cargo near deploy
 
 Builds the smart contract (equivalent to `cargo near build`) and guides you to deploy it to the blockchain.
 
-### Using cargo build
-
-```sh
-RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
-```
-
 ## Building with reproducible builds
 
 Since WebAssembly compiler includes a bunch of debug information into the binary, the resulting binary might be