added rhistory to gitignore
added note to readme about pushing some data into ES
updated man files for new roxygen2 version
added list of search params to es_search man page
fixe up es_cat function
removed rjson and RJSONIO to  use jsonlite througought pkg
removed plyr from imports, using internal compact version
added globals file to deal with tt var
messing with cluster fxn