usability: do not print usage on error #1186
Description
stop printing usage on error.
it's really annoying to see error in case of command line usage error because usage print occupies whole screen.
$ phpcs -v --standard=PHPCompatibility --runtime-set testVersion 5.3-7.0 --exclude=PHPCompatibility.Sniffs.PHP.ForbiddenNamesAsInvokedFunctionsSniff cs70-int.php 
i have to scroll back two screens of text to see the actual error:
