add writing docs page
add writing docs page

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