Fix dep=T in devtools::install_deps instruction

`deps = T` changed to `dep = T`, fixing "unused argument" error. The full parameter name with the default value is `dependencies = NA`, according to the documentation.
let geom_boxplot use the default colour, shape and size of geom_point
Merge pull request #945 from tonytonov/master

Fix dep=T in devtools::install_deps instruction
Fix typo in docs. Spotted in #942
Merge branch 'master' of github.com:ThierryO/ggplot2 into ThierryO-master

Conflicts:
	R/geom-boxplot.r
	man/geom_boxplot.Rd
Add linebreak
Clarify role of fun.data. Closes #929
New labeller functions from @stefanedwards.
Squashed from #910
Merge pull request #1 from hadley/master

merge master back in