[docs] API & Parameter usage

[jhk0530]

Hi, thanks for nice app.

I explored api and summarized parameter from apps/api/internal/api/image/params.go

Any comments are appreciated.

I think add to readme.md will be helpful for newbie users like me

Parameter description

Name	Type	Description
repo	Character	required
max	Integer	number of max contributors. Default is 100
columns	Integer	number of columns for icons. Default is 12
anon	Bool	whether to include Bots like github-actions[bot]. Default is false
preview	Bool	Don't know how this work
Via	String	Don't know how this work, Possible value is unknown, github, preview

Usage

multiple parameter can be used with &

• Basic (Default) : https://contrib.rocks/image?repo=lacolaco/contributors-img

• max: https://contrib.rocks/image?repo=lacolaco/contributors-img&max=2

• columns: https://contrib.rocks/image?repo=lacolaco/contributors-img&columns=1

• anon: https://contrib.rocks/image?repo=statgarten/door&anon=true

https://contrib.rocks/image?repo=statgarten/door&anon=false

I changed example since this repo doesn't work with anon

3rd contribution is github-actions[bot]

Thanks.

Kim

[jhk0530]

I missed this one 🥲