add fossmeet'18 to events

events/details/2018-02-17-00.yaml

+id: "2018-02-17-00"
+name: "FOSSMeet'18 - NIT Calicut"
+state: "Kerala"
+district: "Calicut"
+venue: "National Institute of Technology, Calicut"
+lat: "11.3200"
+lon: "75.9327"
+organizedby: "FOSSCell, NITC"
+when: "17-02-2018 09:00 AM to 18-02-2018 07:00 PM"
+description: "FOSSMeet is an annual event on Free and Open Source Software, conducted at National Institute of Technology, Calicut."
+contactinfo: "Riot room #fosscell:matrix.org"
+imgurl: "https://pbs.twimg.com/profile_images/834881470275604480/HI0hdYp1.jpg"