-Admin he can:
	-create post,
	-create comment
	-manage all posts,
	-manage all comments,
	-manage users (delets or change user types: bloger/reader)

-Bloger he can:
	-create posts,
	-create comments,
	-manage his posts,
	-manage his comments

-Reader he can:
	-create comments,
	-manage his comments