Documentation: better design, add installation instructions

docs/getting-started.md

@@ -0,0 +1,34 @@
+# Getting started
+
+## Install protoc
+
+The betterproto2 compiler is a plugin of `protoc`, you first need to [install](https://grpc.io/docs/protoc-installation/) it.
+
+## Install `betterproto2_compiler`
+
+It is possible to install `betterproto2_compiler` using pip:
+
+```
+pip install betterproto2_compiler
+```
+
+## Compile a proto file
+
+Create the following `example.proto` file.
+
+```proto
+syntax = "proto3";
+
+package helloworld;
+
+message HelloWorld {
+    string message = 1;
+}
+```
+
+You should now be able to compile it using:
+
+```
+mkdir lib
+protoc -I . --python_betterproto2_out=lib example.proto
+```

docs/index.md

@@ -1,4 +1,4 @@
 Home
 ====
 
-Welcome to betterproto2-compiler's documentation!
+Welcome to `betterproto2_compiler`'s documentation! This site will guide you through the steps needed to install and use the betterproto2 compiler.

mkdocs.yml

@@ -1,11 +1,20 @@
-site_name: Betterproto2 Compiler
+site_name: Betterproto2
 site_url: https://betterproto.github.io/python-betterproto2-compiler/
 theme:
   name: material
   palette:
     primary: deep orange
     accent: deep orange
 
+  features:
+   - navigation.tabs
+
+nav:
+  - Betterproto2: https://betterproto.github.io/python-betterproto2/
+  - Betterproto2 compiler:
+     - index.md
+     - Getting started: getting-started.md
+
 plugins:
 - mkdocstrings
 

pyproject.toml

@@ -34,7 +34,7 @@ pytest = "^6.2.5"
 protobuf = "^4"
 
 [tool.poetry.scripts]
-protoc-gen-python_betterproto = "betterproto2_compiler.plugin:main"
+protoc-gen-python_betterproto2 = "betterproto2_compiler.plugin:main"
 
 [tool.ruff]
 extend-exclude = ["tests/output_*"]

tests/util.py

@@ -46,7 +46,7 @@ async def protoc(
 ):
     path: Path = Path(path).resolve()
     output_dir: Path = Path(output_dir).resolve()
-    python_out_option: str = "python_betterproto_out" if not reference else "python_out"
+    python_out_option: str = "python_betterproto2_out" if not reference else "python_out"
 
     if pydantic_dataclasses:
         plugin_path = Path("src/betterproto2_compiler/plugin/main.py")