json-diff cli always returns error shell status code

[elgalu]

json-diff ....
echo $?
#=> 1

[elgalu]

Ah exit 1 here, should be 0

https://github.com/andreyvit/json-diff/blob/master/lib/cli.coffee#L48

[ewoudenberg]

Resolved in 0.6.1 -- always returns exit code 0 if it does any work. If there's an error or the help message is output we exit with non-zero.