Minor update on CI docs examples
Minor update on CI docs examples

Triggered by gitlab-org/gitlab-ci-yml#1 I've investigated how this is
organized so far and did a minor clean up. In my opinion we should just
keep a list of up to date blog posts in the docs and examples should be
included in gitlab-org/gitlab-ci-yml. This reduces the number of
projects and docs pages one has to look for information.

[ci skip]

mmkassem/gitlabhq,screenpages/gitlabhq,t-zuehlsdorff/gitlabhq,darkrasid/gitlabhq,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,jirutka/gitlabhq,allysonbarros/gitlabhq,dreampet/gitlab,daiyu/gitlab-zh,darkrasid/gitlabhq,LUMC/gitlabhq,darkrasid/gitlabhq,allysonbarros/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,dplarson/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,SVArago/gitlabhq,iiet/iiet-git,iiet/iiet-git,shinexiao/gitlabhq,mmkassem/gitlabhq,htve/GitlabForChinese,screenpages/gitlabhq,daiyu/gitlab-zh,daiyu/gitlab-zh,SVArago/gitlabhq,iiet/iiet-git,screenpages/gitlabhq,stoplightio/gitlabhq,htve/GitlabForChinese,LUMC/gitlabhq,LUMC/gitlabhq,htve/GitlabForChinese,openwide-java/gitlabhq,dreampet/gitlab,dreampet/gitlab,mmkassem/gitlabhq,allysonbarros/gitlabhq,screenpages/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,dplarson/gitlabhq,icedwater/gitlabhq,SVArago/gitlabhq,shinexiao/gitlabhq,openwide-java/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq,htve/GitlabForChinese,stoplightio/gitlabhq,allysonbarros/gitlabhq,shinexiao/gitlabhq,shinexiao/gitlabhq,dplarson/gitlabhq,axilleas/gitlabhq,daiyu/gitlab-zh,axilleas/gitlabhq,dplarson/gitlabhq,icedwater/gitlabhq,SVArago/gitlabhq,darkrasid/gitlabhq,icedwater/gitlabhq,iiet/iiet-git,openwide-java/gitlabhq,icedwater/gitlabhq,t-zuehlsdorff/gitlabhq,openwide-java/gitlabhq