Updated ignore list.
Moved tests from inst/tests to tests/testthat
Renamed checklists.R to ee_checklists.R
Ignoring cached results
Added template for progress bar documentation
Added an option to turn off progress bar without suppressing other useful messages.

This prevents knitted documents from being cluttered with pages and pages of progress.
Minor edit: formatting.
Added a description of data source to the package.
Updated vignette.
Updated documentation.