Fixes #5 - let's not confuse @node with node
Redid sqlplus update-alternatives notification using metaprogramming magic
Merge branch 'master' into package_install_order

Conflicts:
	libraries/utils.rb

Incorporate changes from master "@n" versus "@node"
Remove module "constructor" and initialise @n in ruby block

I was getting nil "@n" objects because the constructor in the
library code was not being called since it was a module, not a class.
Initialising the @n object in the mixed in block instead seems to work.