Create the LazyBuilder_Taxonomy::modify() method.

commit for #24 and I'll closes it.
Must to calling $listener::notify in some process (add, remove and modify)

commit for #37
Create the "make by num" factory method on the LazyBuilder_Building class and the LazyBuilder::config() method.

commit for #34 and #32
Merge remote-tracking branch 'origin/master' into iss24_and_more

Conflicts:
	lazybuilder.php
	lazybuilder/taxonomy.php
Merge pull request #38 from e-g-kangaroo/iss24_and_more

Iss24 and more