Are `--file` flags really necessary?

[JensRantil]

Readme file gives

yamldiff --file1 /path/to/yamlfile1.yml --file2 /path/to/yamlfile2.yml

as an example. Given that I assume every invocation requires two files as input, maybe

yamldiff /path/to/yamlfile1.yml /path/to/yamlfile2.yml

(similar to good'ole diff) is nicer?