CLI: A more human-friendly message for undetected project types

[Hypnosphi]

Issue: #475

This is a replacement for #1647, restricted to improving the console output only

[codecov]

Codecov Report

Merging #1825 into release/3.3 will decrease coverage by <.01%.
The diff coverage is 0%.

@@               Coverage Diff               @@
##           release/3.3    #1825      +/-   ##
===============================================
- Coverage        22.45%   22.45%   -0.01%     
===============================================
  Files              321      321              
  Lines             6279     6280       +1     
  Branches           786      777       -9     
===============================================
  Hits              1410     1410              
- Misses            4281     4284       +3     
+ Partials           588      586       -2

Impacted Files	Coverage Δ
lib/cli/bin/generate.js	0% <0%> (ø)	⬆️
addons/info/src/components/PropVal.js	41.41% <0%> (ø)	⬆️
addons/knobs/src/components/PropField.js	10.86% <0%> (ø)	⬆️
app/react-native/src/bin/storybook-start.js	0% <0%> (ø)	⬆️
.../ui/src/modules/ui/components/layout/dimensions.js	15.62% <0%> (ø)	⬆️
addons/knobs/src/components/types/Select.js	7.93% <0%> (ø)	⬆️
addons/storyshots/src/storybook-channel-mock.js	22.22% <0%> (ø)	⬆️
...react-native/src/manager/components/PreviewHelp.js	0% <0%> (ø)	⬆️
...res__/update-addon-info/update-addon-info.input.js	0% <0%> (ø)	⬆️
addons/knobs/src/components/PropForm.js	8.51% <0%> (ø)	⬆️
... and 18 more

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