Implement function to test class interplay.
ignore more stuff
Numerous fixes. 

- Makes MarkovChain methods pure virtual
- Remove MarkovChain.cpp
- MarkovChain::chainOutput returns a Rcpp::List rather than 
	reference to one.
- Implement dummy functions for Method1.
- Edit RngStream to use R_alloc for it's memory management.
- probably more
import detectCores from parallel
fix default help file so that examples don't break package installation
delete unnecessary file