Add kotlin package

packages/kotlin.rb

+require 'package'
+
+class Kotlin < Package
+  description 'Statically typed programming language for modern multiplatform applications'
+  homepage 'https://kotlinlang.org/'
+  version '1.1.61'
+  source_url 'https://github.com/JetBrains/kotlin/releases/download/v1.1.61/kotlin-compiler-1.1.61.zip'
+  source_sha256 '46103d3f65c4016cb62ff8b77ee3e072ff930e69edf69444d723bb22b12a0d83'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'jdk8'
+  depends_on 'unzip' => :build
+
+  def self.install
+    system "mkdir -p #{CREW_DEST_PREFIX}/bin"
+    system "mkdir -p #{CREW_DEST_PREFIX}/share/kotlin"
+    system "rm -f bin/*.bat"
+    system "cp -r . #{CREW_DEST_PREFIX}/share/kotlin"
+    FileUtils.cd("#{CREW_DEST_PREFIX}/share/kotlin/bin") do
+      system "find . -exec ln -s #{CREW_PREFIX}/share/kotlin/bin/{} #{CREW_DEST_PREFIX}/bin \\;"
+    end
+  end
+end