release.sh in waylon-slack-0.1.2

- old
+ new

@@ -1,6 +1,8 @@
 #!/bin/sh
 
+apt-get update && apt-get install -y libsodium-dev
+
 gem install bundler -v '~> 2.3'
 bundle install
 rm -rf pkg/*.gem
 bundle exec rake build
 bundle exec gem push pkg/*.gem