docs: fix quickstart install command

pages/docs/quickstart/embeddings.mdx

@@ -12,10 +12,11 @@ Before installing `rig`, make sure you have [the Rust programming language](http
 To install `rig`, you can do so with the following command in a Rust project (in your terminal):
 
 ```bash
-cargo add rig-core tokio
+cargo add rig
+cargo add tokio --features macros,rt-multi-thread
 ```
 
-This will add the `rig-core` dependency in your Rust project, as well as Tokio which is an asynchronous Rust runtime which you will need to use `rig`.
+This will add the `rig` dependency in your Rust project, as well as Tokio which is an asynchronous Rust runtime which you will need to use `rig`.
 
 ## Embeddings with Rig
 

pages/docs/quickstart/getting_started.mdx

@@ -12,10 +12,11 @@ Before installing `rig`, make sure you have [the Rust programming language](http
 To install `rig`, you can do so with the following command in a Rust project (in your terminal):
 
 ```bash
-cargo add rig-core tokio
+cargo add rig anyhow dotenvy
+cargo add tokio --features macros,rt-multi-thread
 ```
 
-This will add the `rig-core` dependency in your Rust project, as well as Tokio which is an asynchronous Rust runtime which you will need to use `rig`.
+This will add `rig`, Tokio for the async runtime, `anyhow` for error handling, and `dotenvy` for loading environment variables from a local `.env` file.
 
 ## Basic Usage
 
@@ -25,9 +26,13 @@ Below is a simple example of how you can use `rig` to prompt OpenAI's GPT-4 mode
 use rig::client::{CompletionClient, ProviderClient};
 use rig::completion::Prompt;
 use rig::providers::openai;
+use anyhow;
 
 #[tokio::main]
 async fn main() -> Result<(), anyhow::Error> {
+    // Load environment variables from a local `.env` file, if present.
+    dotenvy::dotenv().ok();
+
     // Create OpenAI client
     let client = openai::Client::from_env();
 
@@ -46,6 +51,8 @@ async fn main() -> Result<(), anyhow::Error> {
 }
 ```
 
-To run this, you will need an OpenAI API key as an environment variable (`OPENAI_API_KEY`). Then simply use `cargo run` and you'll see your response!
+To run this, set your OpenAI API key as an environment variable or add it to a `.env` file:
+
+OPENAI_API_KEY=your-api-key
 
 Interested in using other providers like DeepSeek or Claude? Check out [our list of providers that we support.](/docs/integrations/model_providers)

pages/docs/quickstart/tools.mdx

@@ -12,10 +12,11 @@ Before installing `rig`, make sure you have [the Rust programming language](http
 To install `rig`, you can do so with the following command in a Rust project (in your terminal):
 
 ```bash
-cargo add rig-core tokio
+cargo add rig anyhow serde serde_json
+cargo add tokio --features macros,rt-multi-thread
 ```
 
-This will add the `rig-core` dependency in your Rust project, as well as Tokio which is an asynchronous Rust runtime which you will need to use `rig`.
+This will add the `rig` dependency in your Rust project, as well as Tokio which is an asynchronous Rust runtime which you will need to use `rig`.
 
 ## Tool functions with Rig