Merge pull request thingsboard#69 from OekoSolveMG/feat_imrpoved_update

Feat improved update

Merge branch 'master' of https://github.com/thingsboard/ThingsBoard-A…

…rduino-MQTT-SDK

Changes related to comments and added build for nano and mega boards …

…in test script

v0.4.0 release

v0.3.0 release tag

New release of the SDK

ThingsBoard Arduino SDK release, v0.1.0