mdl_token: Obtains a Mendeley Token valid for the current session.
In zeehio/mendeleyr: Mendeley API for R

The first time you get the token you will need to authorise your application (mendeleyr) access to your account.

1	mdl_token(mendeley_conf, cache = NA)

`mendeley_conf`	a list with two items: `client_id` and `client_secret`. If it is a file path to a json file, it will be loaded with `mdl_conf_load()`
`cache`	A logical value or a string. `TRUE` means to cache using the default cache file `.httr-oauth`, `FALSE` means don't cache, and `NA` means to guess using some sensible heuristics. A string mean use the specified path as the cache file.

## Not run: 
 # loads secret from ".mendeley_conf.json" in current directory:
token <- mdl_token()
# loads secret from "secret.json" in current directory
token <- mdl_token("secret.json")
# Loads secret from code (not recommended, as it may be accidentally redistributed)
token <- mdl_token(list(client_id = "given-by-mendeley", client_secret = "given-by-mendeley"))


## End(Not run)