Standalone vault

[jenow]

What does this PR do?

Make Vault standalone.

Please read the README to know more.

How should this be manually tested?

npm run test

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (1-dev@14cd3af). Click here to learn what that means.
The diff coverage is 90.32%.

@@           Coverage Diff            @@
##             1-dev       #1   +/-   ##
========================================
  Coverage         ?   90.32%           
========================================
  Files            ?        1           
  Lines            ?       62           
  Branches         ?        0           
========================================
  Hits             ?       56           
  Misses           ?        6           
  Partials         ?        0

Impacted Files	Coverage Δ
lib/vault.js	90.32% <90.32%> (ø)

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