notFound method to have access to middleware.

[aichholzer]

As suggested here: #135

TODO: Needs unit tests.

[codecov]

Codecov Report

Merging #140 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #140   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           7      7           
  Lines         264    266    +2     
=====================================
+ Hits          264    266    +2

Impacted Files	Coverage Δ
packages/rayo/bridge.js	100% <ø> (ø)	⬆️
packages/rayo/index.js	100% <100%> (ø)	⬆️

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[coveralls]

Pull Request Test Coverage Report for Build 997

• 7 of 7 (100.0%) changed or added relevant lines in 1 file 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 995:	0.0%
Covered Lines:	532
Relevant Lines:	532

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💛 - Coveralls