Add a link to the Issue Boards API in main README
Add a link to the Issue Boards API in main README

[ci skip]

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