Add options for generating only/no rounded icons

[cbrevik]

Resolves #128

Got a bit ahead of discussion in the issue, and just implemented it. Not sure if it fits in the API you want to build for this tool.

[codecov]

Codecov Report

Merging #129 into master will decrease coverage by 0.79%.
The diff coverage is 81.81%.

@@            Coverage Diff             @@
##           master     #129      +/-   ##
==========================================
- Coverage   98.23%   97.43%   -0.80%     
==========================================
  Files          16       16              
  Lines         226      234       +8     
==========================================
+ Hits          222      228       +6     
- Misses          4        6       +2     

Impacted Files	Coverage Δ
src/validate-parameters.js	93.33% <66.66%> (-6.67%)	⬇️
src/android/generate-manifest-icons.js	95.23% <85.71%> (-4.77%)	⬇️
src/generate.js	100.00% <100.00%> (ø)

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[lenovouser]

I need this too. Can the PR be merged?

[dwmkerr]

Looks great! Only suggestion, can we make it clear with a code comment what the default behaviour is and add a short update to the README describing the option and how to manage round icons for Android? I don't mind doing the second bit if easier cause I could probably do with updating the docs to describe each parameter in detail anyway!

[cbrevik]

@dwmkerr sure! I added an extra line in the CLI about default behaviour, and some docs as well. Tried to explain it as well as I could. Hope it's adequate 👍

[cbrevik]

@dwmkerr Anything I can do to unblock the PR? 😇