merge package template from arlac77/npm-package-template

[arlac77]

package.json

• chore(devDependencies): update rollup@^0.52.1 from template

doc/README.hbs

• docs(README): update from template

[coveralls]

Coverage remained the same at 57.746% when pulling 4f1f410 on template-sync-1 into c68c8ec on master.

[codecov-io]

Codecov Report

Merging #13 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #13   +/-   ##
=======================================
  Coverage   60.29%   60.29%           
=======================================
  Files           2        2           
  Lines          68       68           
=======================================
  Hits           41       41           
  Misses         27       27

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