added oauth hidden file to gitignore
removed httr oauth file
added browse fxn
added new fxn edit
new functions for deleting, renaming, and editing files
reworked gist() to get a single gist by id,
and added functions as.gist and helper functions to coerce numerics characters, lists, etc. to gist objects
reworked auth fxn
reworked gists() to output a list of objects of class gist