Document the public Project API and document `GET /projects/:id/users`
Document the public Project API and document `GET /projects/:id/users`

Signed-off-by: Rémy Coutable <4ea0184b9df19e0786dd00b28e6daa4d26baeb3e@rymai.me>

darkrasid/gitlabhq,openwide-java/gitlabhq,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,htve/GitlabForChinese,darkrasid/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,htve/GitlabForChinese,htve/GitlabForChinese,mmkassem/gitlabhq,LUMC/gitlabhq,mmkassem/gitlabhq,openwide-java/gitlabhq,openwide-java/gitlabhq,iiet/iiet-git,iiet/iiet-git,mmkassem/gitlabhq,LUMC/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,openwide-java/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,darkrasid/gitlabhq,htve/GitlabForChinese,LUMC/gitlabhq,dplarson/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,jirutka/gitlabhq,darkrasid/gitlabhq,stoplightio/gitlabhq,dplarson/gitlabhq