fix: delete temporary directory after generate tests

add: test removal and creation of temporary directory
add: test copying of site file
change: verify success notice
add: missing file notice test
refactor: removed old commented out code
refactor: added FIXME and commented out exception rescue clause
add: test creation of file per page
add: copy page file test
change: extended setup/update instructions

refactor: use strict mediawiki markup header syntax
change: test real page
change: better elevator pitch