Option to store images in same folder like the edited md file

[matrixik]

Hi, thank you for nice package.

I would like to have option to save images in the same folder that md file is edited.

Why? I store all my posts in following tree:

.
├── 2017
│   ├── 001-podcast-o-go-ze-mna
│   │   └── podcast-o-go-ze-mna.md
│   ├── 002-technologie-najblizszej-przyszlosci
│   │   └── technologie-najblizszej-przyszlosci-md.md
│   ├── 003-proste-zarzadzanie-nvm-za-pomoca-pluginu-zsh
│   │   └── proste-zarzadzanie-nvm-za-pomoca-pluginu-zsh.md
│   ├── 004-docker-zbieranie-logow-z-kontenerow-do-logstash
│   │   └── docker-zbieranie-logow-z-kontenerow-do-logstash.md
│   └── 005-wydajny-programista
│       └── wydajny-programista.md

I have every post in separate folder so that when I add image then it will be stored in same folder instead of be cluttered in one big assets folder.