buildmodule formating improved.
Merge pull request #21 from goldingn/master

added GetPackage helper file
some work on daisy chains which are now in different branch.
fixing merge
Data chains hopefully done
Data chains now working
Believe all except output can be chained now
Small changes before merging to master
Some test edits. Chain tests started
Chain docs added.
Quick start added to github.
Not sure this is the best place to keep this actually.
Fixed bug in croassvalidation in workflow()
Crossvalid prevent names being dropped w/ 1 var.
Added drop=FALSE to covars subsetting in predict for the crossvalidation.
Zoon demo for workshop added.
error processoutput instead of covariate output
Fixed Chain for covariates
specified repository in GetPackage so it doesn't prompt user