Cpsk datematch

* Plugin is now able to also match date when user specifies it in query. For instance `10.12.2014 bus z TO do BA`
* Also added more examples
* Don't throw exception when there are no results, rather return "Nothing found"

This closes #29 
@Adman I'm sorry, it seems my understanding was wrong. The only thing I would have here would be that you can easily shorthen the thing above by replacing `0-9` with `\d`. 

Other than that it looks good, sorry for the holdup.