How to create a key hash in Ruby without quotes : Im trying to create a header to my api like this:
      
    header = {:Content-Type => "application/json"}

But Im having a problem with the key that contains a dash.

If I use ( :"Content-Type" ) or ( "Content-Type".to_sym ) the results is a key like this: 

    irb(main):001:0> "Content-Type".to_sym
    => :"Content-Type"

I found some people saying that I can use .to_sym.inspect to create a Symbol without quotes, but it didnt work.

    irb(main):002:0> "Content-Type".to_sym.inspect
    => ":\"Content-Type\""

