Add release script

Author: danielberkompas

script/release

@@ -0,0 +1,18 @@
+#!/usr/bin/env ruby
+
+puts "What version number do you want to release?"
+print "> "
+version = gets.gsub(/\n/, "")
+
+continue = system "github_changelog_generator"
+continue = system "keybase dir sign" if continue
+continue = system "git add ."
+continue = system "git commit -am \"Release version #{version}\"" if continue
+continue = system "git tag v#{version}" if continue
+continue = system "git push" if continue
+continue = system "git push -f origin v#{version}" if continue
+continue = system "mix hex.publish" if continue
+continue = system "mix hex.docs" if continue
+
+puts "Version #{version} was successfully released!"
+