docs: add root README.md, fix links (#9)

Author: barjin

README.md

@@ -0,0 +1,58 @@
+# impit | browser impersonation made simple
+
+impit is a `rust` library that allows you to impersonate a browser and make requests to websites. It is built on top of `reqwest`, `rustls` and `tokio` and supports HTTP/1.1, HTTP/2, and HTTP/3.
+
+The library provides a simple API for making requests to websites, and it also allows you to customize the request headers, use proxies, custom timeouts and more.
+
+```rust
+use impit::impit::Impit;
+use impit::emulation::Browser;
+ 
+#[tokio::main]
+async fn main() {
+   let mut impit = Impit::builder()
+       .with_browser(Browser::Firefox)
+       .with_http3()
+       .build();
+
+   let response = impit.get(String::from("https://example.com"), None).await;
+
+   match response {
+       Ok(response) => {
+           println!("{}", response.text().await.unwrap());
+       }
+       Err(e) => {
+           println!("{:#?}", e);
+       }
+   }
+}
+```
+
+### Other projects
+
+If you are looking for a command-line tool that allows you to make requests to websites, check out the [`impit-cli`](https://github.com/apify/impit/tree/master/impit-cli) project.
+
+If you'd prefer to use `impit` from a Node.js application, check out the [`impit-node`](https://github.com/apify/impit/tree/master/impit-node) folder, or download the package from npm:
+```bash
+npm install impit
+```
+
+### Usage from Rust
+
+Technically speaking, the `impit` project is a somewhat thin wrapper around `reqwest` that provides a more ergonomic API for making requests to websites. 
+The real strength of `impit` is that it uses patched versions of `rustls` and other libraries that allow it to make browser-like requests.
+
+Note that if you want to use this library in your rust project, you have to add the following dependencies to your `Cargo.toml` file:
+```toml
+[dependencies]
+impit = { git="https://github.com/apify/impit.git", branch="master" }
+
+[patch.crates-io]
+rustls = { git="https://github.com/apify/rustls.git", branch="impit-patch" }
+h2 = { git="https://github.com/apify/h2.git", branch="impit-patch" }
+```
+
+Without the patched dependencies, the project won't build.
+
+Note that you also have to build your project with `rustflags = "--cfg reqwest_unstable"`, otherwise, the build will also fail.
+This is because `impit` uses unstable features of `reqwest` (namely `http3` support), which are not available in the stable version of the library.

impit/README.md

@@ -30,9 +30,9 @@ async fn main() {
 
 ### Other projects
 
-If you are looking for a command-line tool that allows you to make requests to websites, check out the [`impit-cli`](https://github.com/apify/impit-cli/) project.
+If you are looking for a command-line tool that allows you to make requests to websites, check out the [`impit-cli`](https://github.com/apify/impit/tree/master/impit-cli) project.
 
-If you'd prefer to use `impit` from a Node.js application, check out the [`impit-node`](https://github.com/apify/impit-node) repository, or download the package from npm:
+If you'd prefer to use `impit` from a Node.js application, check out the [`impit-node`](https://github.com/apify/impit/tree/master/impit-node) folder, or download the package from npm:
 ```bash
 npm install impit
 ```