srcpkgs 0.2

• added vignette Testing and checking packages with srcpkgs
• exported pkg_attach() and pkg_list_attached()
• exported pkg_roxygenise()
• added pkg_check() and pkgs_check()
• now pkgs_test() accepts more types of input as first main param (via as_srpkgs())
• fixed pkg_load() when a package is already loaded and up to date but not attached

srcpkgs 0.1

• added two vignettes, getting ready for initial CRAN submission