Merge 'dev' to 'master'#1

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jjustin wants to merge 9 commits intomasterfrom

Commits on Jul 26, 2017

added scrpit for lambda s3 apt repo handling
Janez Justin
committed

Commits on Aug 1, 2017

ADD option to skip GPG signing
Janez Justin
committed
UPDATE Readme.md
Janez Justin
committed

Commits on Aug 2, 2017

Update README.md
jjustin
authored

Commits on Aug 10, 2017

ADD Travis.yml and Makefile examples
Janez Justin
committed

Commits on Aug 14, 2017

Code polish and readme update
Janez Justin
committed

Commits on Aug 22, 2017

FIX no passphrase gpg keys causing badsign
Janez Justin
committed
RMV Packages hash checking
Janez Justin
committed

Commits on Aug 23, 2017

Changed CACHE_PREFIX env variable to CACHE
Janez Justin
committed