Readme and model fixes

README.md

@@ -0,0 +1,88 @@
+# Async Python Client to The RTEX API Server
+
+## Installation
+
+```bash
+pip install rtex
+```
+
+## Usage
+
+The API surface of Rtex is spartan so this is basically the whole thing.
+
+```python
+import asyncio
+
+from rtex.client import AsyncRtexClient
+
+async def amain():
+  async with AsyncRtexClient() as rtex:
+    res = rtex.create_render("\(x^2 + x - 1\)")
+
+    if res.status == "success":
+      with open("equation.png") as output_fd:
+        await res.save_render(
+          res.filename,
+          output_fd
+        )
+
+def main():
+  asyncio.run(amain())
+
+if __name__ == "__main__":
+  main()
+```
+
+## No Thoughts, Just Render
+
+```python
+async def amain():
+  async with AsyncRtexClient() as rtex:
+    buf = await rtex.render_math("e^x + 1")
+
+    # `buf` now contains the bytes of the PNG
+```
+
+## Do I look like I know what a Jay-Peg is?
+
+```python
+async def amain():
+  async with AsyncRtexClient() as rtex:
+    # The render methods accept a format parameter.
+    # Supported values are "png", "jpg" and "pdf"
+    buf = await rtex.render_math("e^x + 1", format="jpg")
+```
+
+## Self-Hoster
+
+Set the environment variable `RTEX_API_HOST` or do the following.
+
+```python
+
+async def amain():
+  async with AsyncRtexClient(api_host="https://myserver.ru") as rtex:
+    buf = await rtex.render_math("e^x + 1")
+```
+
+
+## I Can Tell By The Pixels
+
+`quality` in Rtex speak is an abstract notion of compression for the given
+format where `100` is the least compressed and `0` is the most. At the time of
+writing the default is `85`.
+
+`density` in Rtex speak is how much to sample the rendered PDF when generating
+an image. This has no effect on the `"pdf"` format. At the time of writing the
+default is `200`.
+
+```python
+
+async def amain():
+  async with AsyncRtexClient(api_host="https://myserver.ru") as rtex:
+    needs_more_jpeg = await rtex.render_math(
+      "e^x + 1",
+      density=50,
+      quality=1
+    )
+```
+

rtex/__init__.py

@@ -1 +1 @@
-__version__ = "0.0.1"
+__version__ = "0.0.2"

rtex/client.py

@@ -144,12 +144,18 @@ class AsyncRtexClient:
         self,
         code: str,
         format: RenderFormat = "png",
+        documentclass: str = "minimal",
+        quality: Optional[RenderQuality] = None,
+        density: Optional[RenderDensity] = None,
     ):
         final_doc = rf"\({code}\)"
 
         res = await self.create_render(
             code=final_doc,
             format=format,
+            documentclass=documentclass,
+            quality=quality,
+            density=density,
         )
 
         if res.status == "error":

rtex/models.py

@@ -3,7 +3,7 @@ from typing import Annotated, Literal, Optional, Union
 from pydantic import BaseModel, Field, conint
 
 RenderFormat = Literal["png", "jpg", "pdf"]
-RenderQuality = Annotated[int, conint(ge=0, le=100)]
+RenderQuality = Annotated[int, conint(gt=0, le=100)]
 RenderDensity = int