first cut of adding the cascading sdk to the setup
include cascading sdk in the setup and make the path hhandling less brittle
make each VM use 1g of memory instead of the default 384m
split avahi setup into its own module
added .gitignore file
some grammar and formatting fixes in the README
updated README after avahi move
move cascading into its own module an move all hadoop bits into the hadoop module
move init.pp in correct directory
merge module refactoring, use more memory by default and include cascading SDK support. The latter is commented out for now.