More README info

README.md

@@ -9,10 +9,21 @@ nix flake init --template github:the-nix-way/dev-templates#${ENV}
 Here's an example (for the [`rust`](./rust) template):
 
 ```shell
+# Initialize in the current project
 nix flake init --template github:the-nix-way/dev-templates#rust
+
+# Create a new project
+nix flake new --template github:the-nix-way/dev-templates#rust ${NEW_PROJECT_DIRECTORY}
 ```
 
-Available templates:
+## How to use the templates
+
+Once your preferred template has been initialized, you can use the provided shell in two ways:
+
+1. If you have [`nix-direnv`][nix-direnv] installed, you can initialize the environment by running `direnv allow`.
+2. If you don't have `nix-direnv` installed, you can run `nix develop` to open up the Nix-defined shell.
+
+## Available templates
 
 | Language/framework/tool | Template                  |
 | :---------------------- | :------------------------ |
@@ -30,6 +41,26 @@ Available templates:
 | [Scala]                 | [`scala`](./scala/)       |
 | [Zig]                   | [`zig`](./zig/)           |
 
+## Template contents
+
+The sections below list what each template includes.
+
+### `dhall`
+
+- [Dhall]
+- [`dhall-bash`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-bash)
+- [`dhall-csv`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-csv) (Linux only)
+- [`dhall-docs`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-docs)
+- [`dhall-haskell`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-haslekk) (Linux only)
+- [`dhall-json`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-json)
+- [`dhall-lsp-server`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-lsp-server)
+- [`dhall-nix`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-nix)
+- [`dhall-nixpkgs`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-nixpkgs)
+- [`dhall-openapi`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-openapi)
+- [`dhall-text`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-text) (Linux only)
+- [`dhall-toml`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-toml)
+- [`dhall-yaml`](https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-yaml)
+
 [dhall]: https://dhall-lang.org
 [elixir]: https://elixir-lang.org
 [gleam]: https://gleam.run
@@ -37,6 +68,7 @@ Available templates:
 [java]: https://java.com
 [kotlin]: https://kotlinlang.org
 [nix]: https://nixos.org
+[nix-direnv]: https://github.com/nix-community/nix-direnv
 [node]: https://nodejs.org
 [protobuf]: https://developers.google.com/protocol-buffers
 [rust]: https://rust-lang.org