add event GDCR 2017 Beijing
add event GDCR 2017 Beijing
coderetreat/coderetreat.github.io,svenlange/coderetreat.github.io,coderetreat/coderetreat.github.io,tpd-opitz/coderetreat.github.io,svenlange/coderetreat.github.io,tpd-opitz/coderetreat.github.io,coderetreat/coderetreat.github.io,coderetreat/coderetreat.github.io,yugangbai/coderetreat.github.io,tpd-opitz/coderetreat.github.io,yugangbai/coderetreat.github.io,svenlange/coderetreat.github.io,yugangbai/coderetreat.github.io,yugangbai/coderetreat.github.io,svenlange/coderetreat.github.io