remove non-cran packages from SUGGESTS list
Rmd vignette Readme installed to vignettes
NB: This makes EML/vignettes/ the source version, and copies to inst/doc/README.Rmd.  Tested with
devtools::build_vignettes
handle old versions of testthat
add figshare credentials invisibly to README vignette
Have to wait until Sxslt is on CRAN before we can introduce functions that depend on it.
Seems rather over-strict of CRAN to forbid functions to optionally provide additional behavior when using R libraries that are not hosted by CRAN. GRRR.
Fix small complaints from Travis in linewrapping documentation, etc
Build passing on Travis
add icon for Travis build check
update gitignore to ignore files automatically generated by the vignette builder