add description of makeself option «target»

[belonesox]

add description of option «target», see #306 (comment)

[megastep]

True, I forgot we also had --target for Makeself itself instead of just the archives. However I'd like to change the description for that argument, to something like "Specify the directory where the archive will be extracted"

[belonesox]

However I'd like to change the description for that argument, to something like "Specify the directory where the archive will be extracted"

OK! (BTW, the option works, and for me is good workaround for #300 and #302).