Added logo for sponsors

Author: Puranjay25

eventsapp/data/jsonfiles/sponsors.json

@@ -4,28 +4,28 @@
       "name": "Visible Alpha",
       "type": "Gold",
       "website": "http://visiblealpha.com/",
-      "logo": "https://in.pycon.org/2018/images/sponsor/visiblealpha.png",
+      "logo": "https://pbs.twimg.com/profile_images/819673534486245380/w_AQ4ild_400x400.jpg",
       "about": "https://in.pycon.org/2018/"
     },
     {
       "name": "ZeOmega",
       "type": "Silver",
       "website": "http://www.zeomega.com/",
-      "logo": "https://in.pycon.org/2018/images/sponsor/zeomega.png",
+      "logo": "https://content3.jdmagicbox.com/comp/bangalore/40/080p5905740/catalogue/zeomega-infotech-pvt-ltd-basavanagudi-bangalore-health-management-services-2b6iizp.jpg",
       "about": "https://in.pycon.org/2018/"
     },
     {
       "name": "Adobe",
       "type": "Silver",
       "website": "https://www.adobe.com/",
-      "logo": "https://in.pycon.org/2018/images/sponsor/adobe.jpg",
+      "logo": "https://acclaim-production-app.s3.amazonaws.com/images/89ca1ec4-2df8-4ed8-a399-263946a2a272/de19749d89cad6357838f495045807330b165457.png",
       "about": "https://in.pycon.org/2018/"
     },
     {
       "name": "Python Software Foundation",
       "type": "Silver",
       "website": "https://www.python.org/psf-landing/",
-      "logo": "https://in.pycon.org/2018/images/sponsor/psf.png",
+      "logo": "http://hoteleastlund.com/wp-content/uploads/2017/05/python.jpg",
       "about": "https://in.pycon.org/2018/"
     }
   ]