The goal of httbl is to ...
devtools::install_github("ottlngr/httbl")
This is a basic example which shows you how to solve a common problem:
library(httbl)
library(dplyr)
library(tidyr)
library(gapminder)
data("gapminder")
gapminder %>%
group_by(continent, country, year) %>%
nest() %>%
group_by(continent, country) %>%
nest() %>%
group_by(continent) %>%
nest() %>%
httbl()