Create get_results.R

File that contains 4 functions for extracting results from model runs.
Create get_results.R

A file containing four functions that extract results from model runs.
Re-arrange Roxygen docs in get_results; delete old file
Rename get_results.R to get-results.r

Just done to match package conventions. Files with multiple
functions have been named with dashes. Other files use lower case
.r extension.
Roxygenize and minor edits to documentation
Add missing man files for get-result.r functions
Merge branch 'Cole' (with get-results functions) into 'Master'