Reducing JPEG image quality to prevent BLOOMIN8 hiccups

Setting JPEG image quality to 0.90 instead of 0.98 to reduce image sizes; files too large might lead to BLOOMIN8 picture frame hiccups. Lower image quality should not be visible on the frame.

Updating epdoptimize to 1.0.1

Integrating new epdoptimize 1.0.1 version, updating README file because paperlesspaper's uploadSingleImage API service now automatically includes epdoptimize.

Dockerfile, POST image upload

• Adding Dockerfile (thanks @jetpacktuxedo)
• Adding POST image upload additionally to JSON imageURL method

First release

First release 😁