--ignore argument only excepts RegEx

[ckuepker]

Hello there,
we tried to exclude certain XML files from the xunit-viewer input via the --ignore argument. We need to exclude any file that ends on .coverage.xml. The documentation gives xunit-viewer -r folder -i *-broke.xml as an example which seems to fit our use case but if we try it that way we get the following exception:

`else if (file.endsWith('.xml') && !ignore.some(pattern => file.includes(pattern) || new RegExp(pattern).test(file))) files.push(file)
^

SyntaxError: Invalid regular expression: /*.coverage.xml/: Nothing to repeat
at new RegExp ()
at C:\git\ets\node_modules\xunit-viewer\src\cli\get-files.js:10:93
at Array.some ()
at C:\git\ets\node_modules\xunit-viewer\src\cli\get-files.js:10:51
at Array.forEach ()
at getFiles (C:\git\ets\node_modules\xunit-viewer\src\cli\get-files.js:8:8)
at module.exports (C:\git\ets\node_modules\xunit-viewer\src\cli\get-files.js:20:17)
at runXunitViewer (C:\git\ets\node_modules\xunit-viewer\xunit-viewer.js:25:19)
at module.exports (C:\git\ets\node_modules\xunit-viewer\xunit-viewer.js:38:52)
at Object. (C:\git\ets\node_modules\xunit-viewer\bin\xunit-viewer:6:1)`

We had to give a full RegEx (.+\.coverage\.xml) to bypass the check and I think this is not intended. Either the documentation or implementation require a change here.