return non-zero exit code when failing to use given version

taylor / kiex

Elixir version manager

http://taylor.github.io/kiex/

MIT License

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Closed schnittchen closed 8 years ago

schnittchen commented 8 years ago

 ~ ✓ kiex use asdf
Failed to use use asdf
 ~ ✓ echo $?
0

Also, "use" is duplicate in the error message.