add a welcome screen

Author: saviorand

Diff for: .gitignore

@@ -1 +1,2 @@
 *.📦
+.DS_Store

Diff for: README.md

@@ -52,10 +52,10 @@ The plan is to get to a feature set similar to Python frameworks like [Starlette
 <!-- GETTING STARTED -->
 ## Getting Started
 
-The only hard dependency for `lightbug_http` is Mojo. 
-Learn how to set it up on the [Modular website](https://www.modular.com/max/mojo).
+The only hard dependencies for `lightbug_http` are Mojo and [Git](https://docs.github.com/en/get-started/getting-started-with-git). 
+Learn how to get up and running with Mojo on the [Modular website](https://www.modular.com/max/mojo).
 
-Once you have Mojo up and running on your local machine,
+Once you have Mojo set up locally,
 
 1. Clone the repo
    ```sh
@@ -64,6 +64,18 @@ Once you have Mojo up and running on your local machine,
    Alternatively, start the project in Github Codespaces for quick setup:
 
    [![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/saviorand/lightbug_http)
+2. Switch to the project directory:
+   ```bash
+   cd lightbug_http
+   ```
+   then run:
+   ```bash
+   mojo lightbug.🔥
+   ```
+   
+   Open `localhost:8080` in your browser. You should see a welcome screen. 
+   
+   Congrats 🥳 You're using Lightbug!
 2. Add your handler in `lightbug.🔥` by passing a struct that satisfies the following trait:
    ```mojo
    trait HTTPService:

Diff for: lightbug.🔥

@@ -3,5 +3,5 @@ from lightbug_http import *
 
 fn main() raises:
     var server = SysServer()
-    let handler = Printer()
+    let handler = Welcome()
     server.listen_and_serve("0.0.0.0:8080", handler)

Diff for: lightbug_http/__init__.mojo

@@ -1,5 +1,5 @@
 from lightbug_http.http import HTTPRequest, HTTPResponse, OK
-from lightbug_http.service import HTTPService, Printer
+from lightbug_http.service import HTTPService, Welcome
 from lightbug_http.sys.server import SysServer
 
 

Diff for: lightbug_http/http.mojo

@@ -246,6 +246,12 @@ fn OK(body: Bytes) -> HTTPResponse:
     )
 
 
+fn OK(body: Bytes, content_type: String) -> HTTPResponse:
+    return HTTPResponse(
+        ResponseHeader(200, String("OK")._buffer, content_type._buffer), body
+    )
+
+
 fn encode(res: HTTPResponse) -> Bytes:
     var res_str = String()
     let protocol = strHttp11

Diff for: lightbug_http/service.mojo

@@ -17,6 +17,16 @@ struct Printer(HTTPService):
         return OK(body)
 
 
+@value
+struct Welcome(HTTPService):
+    fn func(self, req: HTTPRequest) raises -> HTTPResponse:
+        let html: String
+        with open("static/lightbug_welcome.html", "r") as f:
+            html = f.read()
+
+        return OK(html._buffer, "text/html")
+
+
 @value
 struct ExampleRouter(HTTPService):
     fn func(self, req: HTTPRequest) raises -> HTTPResponse: