Merge pull request #29 from haozhu233/master

Allow spk_add_deps work on shiny.tag.list and html

remove trailing whitespace in imports

switch back to Ramnath as maintainer; forgot to do this after rhub check

add library(formattable) to dplyr example

use new htmlwidgets 0.8 exported getDependency

fix bug in spk_add_deps and add line to avoid warning in dplyr example

add dplyr examples

temporarily change to use unexported htmlwidgets:::getDependency while we wait for CRAN submission

add spk_add_deps helper; closes #19

add spk_chr helper; closes #18

change addComposite to spk_composite; ref #21, #13, #9

fulfills the easy part of #20 by adding formattable to DESCRIPTION Suggests

change maintainer to @timelyportfolio to use rhub

change modifyList to utils::modifyList