Delete hackathon-1.png
Delete hackathon-1.png
gdgistanbul/wtm16,gdgistanbul/wtm-istanbul16,gdgistanbul/wtm16,gdgistanbul/wtm17,gdgistanbul/wtm17,gdgistanbul/wtm17,gdgistanbul/wtm16,gdgistanbul/wtm-istanbul16,gdgistanbul/wtm-istanbul16