Update documentation

[zakkudo]

No description provided.

[codecov-io]

Codecov Report

Merging #2 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master     #2   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           2      2           
  Lines          66     66           
  Branches       20     20           
=====================================
  Hits           66     66

Impacted Files	Coverage Δ
src/ValidationError.js	100% <ø> (ø)	⬆️
src/index.js	100% <ø> (ø)	⬆️

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[coveralls]

Pull Request Test Coverage Report for Build 59

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 35:	0.0%
Covered Lines:	66
Relevant Lines:	66

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💛 - Coveralls