added parse_content() function - need to deal with YAML and attributes next
now capturing all yaml from rmd and assigning as lesson attributes
everything working except need to get attributes for csv files from somewhere
replaced e with e
changed a bunch more 'mod's to 'les's
set lesson name and course name attributes for csv files, which have no other attributes at present
clean up temp variables that act as surrogates for csv yaml
removed calls to rmd2csv elsewhere since converting to csv is now obsolete
fixed removal of temporary variables in e
add travis ci to swirl repo
merge bill's changes
added inherits=FALSE to rm() call per bill's advice
Merge remote-tracking branch 'upstream/master' into parse_content