Tweak readme
Export add_rstudio_project
Return correct path from check_r_cmd()

Previously, `check_r_cmd()` always returned a string indicating that the
check output was built in `tempdir()`, even when `check_dir` was
custom-set by the user.  Now the returned string indicates the correct
location in which the check output was built.
Add attribution for bug fix
Merge pull request #435 from krlmlr/news_union

enable union merge for NEWS.md file
Merge pull request #422 from krlmlr/text_content

don't import deprecated text_content function from httr
Merge pull request #390 from krlmlr/388-install-gh-pull

don't throw error when installing a pull request from GitHub using the format user/repo#pull
Bump R version req to 3.0.2
Use --no-build-vignettes. Closes #391. Closes #352.
Merge branch 'bugfix/print-check-dir' of https://github.com/brentonk/devtools into brentonk-bugfix/print-check-dir
Merge branch 'master' into develop