Mason

[springmeyer]

Increasingly I'm seeing that the majority of node C++ addons being created anew at @mapbox are depending on mason deps. This moves the skel to including the basic scaffolding to make this easy, including:

• Adding a script install_deps.sh to install deps (in this case we install protozero as an example of a lib you might use)
• Making install_deps.sh run when npm install --build-from-source runs.

Learning from https://github.com/mapbox/carmen-cache/pull/63 and https://github.com/mapbox/node-fontnik/pull/128

[codecov-io]

Codecov Report

Merging #43 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #43   +/-   ##
=======================================
  Coverage   98.82%   98.82%           
=======================================
  Files           2        2           
  Lines          85       85           
=======================================
  Hits           84       84           
  Misses          1        1

Impacted Files	Coverage Δ
src/hello_world.cpp	100% <ø> (ø)	:arrow_up:

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