Adds script to save thumbnails to sqlite db

Useful if you wish to browse saved files over a network

Polish readme

Polish readme and update requirements. Tested on RPi 4

Describe use of picamera

Mostly updates to the readme to describe use of picamera

Bump pillow and update readme

Bump pillow as there was a security vulnerability in pillow 6.2. Also update readme

Multiple small improvements

Many improvements to the readme, also fixing some typos and removing unused code

Restructure and use env variable

Restructure and use and env variable to point to config file

Use config file

Merge pull request #7 from robmarkcole/adds-config

Adds config

Initial

All basic functionality