Date setting examples in manual

[wrotycz]

I noticed there are no examples of how to set date using date, in the manual. 
Therefore I propose to add these to examples section to make it clear and easy 
to do so. I used simple formats, more like 'machine formats' to make it 
even simpler, as no one wants to use elaborate formats like 'Thu Mar  3 
23:05:25 2005' only to make wrong. And one of the reasons for it is 
American habit to make things complicated, to put month before day, and stuff 
like that.   That's what I propose:   ----    Set new data and time:   date 
--set "2001-02-03 11:12:13"    Set new date:   date +%Y%m%d -s 
"20010203"    Set time:   date +%T -s "11:12:13"    Regards  
Wrotycz