fix(cli): fixes #70. dev/hot flags should be parsed

[shellscape]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

Fixes #70
The --dev flag was not being parsed and applied to options correctly.
The --hot flag was also missing from the CLI help and docs, and was not being parsed and applied correctly.

Breaking Changes

None

Additional Info

[codecov]

Codecov Report

Merging #91 into master will decrease coverage by 0.49%.
The diff coverage is 77.77%.

@@            Coverage Diff            @@
##           master      #91     +/-   ##
=========================================
- Coverage   92.93%   92.43%   -0.5%     
=========================================
  Files           7        7             
  Lines         283      291      +8     
=========================================
+ Hits          263      269      +6     
- Misses         20       22      +2

Impacted Files	Coverage Δ
cli.js	97.43% <ø> (ø)	⬆️
lib/options.js	88.54% <77.77%> (-1.24%)	⬇️

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