Escaping - Alternative quote as delimiters

---

examples/intro/escaping.cr

name = "Foo Bar"
puts "Hello '#{name}'!"
puts "Hello \"#{name}\"!"

puts %(Hello "#{name}"!) # alternative quotes
puts %{Hello "#{name}"!}

Hello 'Foo Bar'!
Hello "Foo Bar"!
Hello "Foo Bar"!
Hello "Foo Bar"!