Update app.py

Update app.py

Update app.py

Update app.py

Update README.md

Update app.py

app.py: adjust steps boundries and default, allow higher concurrency

Update README.md

Update README.md

app.py: allow custom resolutions (#7)

app.py: fix typo

app.py: use samplers endpoint (#4)

app.py: smaller QoL updates

app.py: use model list endpoint (#3)

`*`: set default image

app.py: increasing concurrency to 5

app.py: increase concurrency to 2

`app.py`: update default prompt

`app.py`: set concurrency to 1

*: initial release

initial commit