accessing
installExternalWordCloudCommons

	| commonFiles folder |
	commonFiles := #( 
		'https://mutabit.com/repos.fossil/mutabit/uv/wiki/commons/nube-mascara.jpg'.
		'http://mutabit.com/repos.fossil/mutabit/raw/tip?at=stopwords-es.txt').
	folder := TweetsCollection dataStore / 'commons'.
	folder exists ifFalse: [ folder ensureCreateDirectory].
	commonFiles do: [ :fileUrl |
		ZnClient new 
			url: fileUrl;
			downloadTo: self folder parent / 'commons'.]