events: Add SegWit Activation Parties

Closes #1746

_events.yml

@@ -286,6 +286,62 @@
   country: "Nigeria"
   link: "http://blockchainnigeria.group/"
 
+- date: 2017-08-23
+  title: "SegWit Activation Party Germany"
+  venue: "Room 77"
+  address: "Graefestr. 77, 10967"
+  city: "Berlin"
+  country: "Germany"
+  link: "http://segwit.party/"
+
+- date: 2017-08-23
+  title: "SegWit Activation Party United States"
+  venue: "Bay Harbor Hotel"
+  address: "7700 West Courtney Campbell Causeway"
+  city: "Tampa"
+  country: "United States"
+  link: "http://segwit.party/"
+
+- date: 2017-08-23
+  title: "SegWit Activation Party Poland"
+  venue: "Bez Slowa"
+  address: "Fosa 3, 02768"
+  city: "Warsaw"
+  country: "Poland"
+  link: "http://segwit.party/"
+
+- date: 2017-08-24
+  title: "SegWit Activation Party Slovakia"
+  venue: "Progressbar Hackerspace"
+  address: "Michalska 3, 811 03"
+  city: "Bratislava"
+  country: "Slovakia"
+  link: "http://segwit.party/"
+
+- date: 2017-08-24
+  title: "SegWit Activation Party Switzerland"
+  venue: "James Joyce Pub"
+  address: "8 Pelikanstrasse"
+  city: "Zurich"
+  country: "Switzerland"
+  link: "http://segwit.party/"
+
+- date: 2017-08-24
+  title: "SegWit Activation Party France"
+  venue: "Sof's Bar"
+  address: "43 rue Saint Sauveur 75002"
+  city: "Paris"
+  country: "France"
+  link: "http://segwit.party/"
+
+- date: 2017-08-25
+  title: "SegWit Activation Party Czech"
+  venue: "Utopia Cajovna"
+  address: "Divadelni 3, 60200"
+  city: "Brno"
+  country: "Czech"
+  link: "http://segwit.party/"
+
 - date: 2017-09-07
   title: "Blockchain & Bitcoin Conference Stockholm"
   venue: "Elite Hotel Marina Tower"