Update

Minor update to typos, etc.

Minor update to typos, etc

Update README.md

Added description on delta OTA

Adding some logs here and there

Matching the buffer size to the delta file configuration

Initial partition to handle OTA updates and also delta file storage

Moving publish message handling to pub/sub.h

Initial commit of delta update

Updated include path

Added extra components (detools, heatshrink) to handle delta updates

Added code to init and handle OTA updates by subscribing to the update topic on start

Update

Added pub/sub broker configuration