Merge pull request #19 from ateucher/master

use getlatlng in ebirdgeo, change order of args in ebirdgeo, roxygenize
version number changed
Merge branches 'master' and 'master' of github.com:ropensci/rebird
added slack line to travis file
remade man files with new roxygen2
added a vignette, just draft
edited vignette, added makefile
added vignette infrastructure
small edits to examples in some fxns, more complete vignette
added readme.rmd, vignette almost done
bumped date on package, and added margins file to gitignore
added readme.rmd to rbuildignore
moved tests files around, added dsstore to gitignore
added more tests, almost all fxns have tests now, #14
removed ignore test from rbuildignore to run on travis, closes #21
bumped date to today
converted any last rcurl stuff to httr closes #11
cleaned up broken tests, #14
fixed curl options with curlopts param for all fxns, closes #22
adde rebird version of plyrs compact fxn so we dont have to import plyr
replaced rbind.fill with rbind_all from dplyr, no longer importing plyr avoid conflict with dplyr
fixed broken test, added missing curlopts param to nearestobs
fixed broken test, updated man files with new roxygene2 version
made ebirdgeo and ebirdregion give back better error messages
and they give back NA now if server errored
also lat and long checking stop errors removed from ebirdgeo cause server provides those error mssgs
changed curlopts param to ... in both fxns