title: Extract value nested with an array of hashes in Ruby
body: <p>I have an XML response from a URL that is being converted into an array of hashes which looks like:</p>
  
  <pre>
  {
    "EmployeeList"=>{
      "EmployeeProfile"=>{
        "BuildLoc"=>{"$"=>"1 Happy Place"},
        "Status"=>{"$"=>"A"},
        "SecrTitle"=>[{}, {}],
        "ID"=>{},
        "bct"=>{},
        "NUM"=>{"$"=>"1234567"},
        "BuildCity"=>{"$"=>"Dayton"},
        "BuildFloor"=>{"$"=>"6"},
        "Expense"=>{"$"=>"1345"},
        "LastName"=>{"$"=>"Smith"},
        "Middle"=>{},
        "SecrName"=>[{}, {}],
        "InternalSMTPAddress"=>{"$"=>"Joe.Smith@happy.com"},
        "IAddress"=>{"$"=>"Joe.Smith@happy.com"},
        "PreferredLastName"=>{},
        "DisplayName"=>{"$"=>"Joe Smith"},
        "CellPhoneNo"=>{},
        "Title"=>{"$"=>"Dr."},
        "BuildStreetAddress"=>{"$"=>"123 Happy town"},
        "BuildState"=>{"$"=>"IL"},
        "FirstName"=>{"$"=>"Joe"},
        "AltContactTitle1"=>{},
        "Dept-CostCtrNo"=>{"$"=>"129923"},
        "PreferredFirstName"=>{"$"=>"Joe"},
        "AltContactName2"=>{},
        "AltContactPhone2"=>{},
        "GDP"=>{},
        "BuildZip"=>{"$"=>"112345"},
        "RegionID"=>{"$"=>"NAMR"},
        "EmploymentType"=>{"$"=>"E"},
        "TempPhone"=>{},
        "BuildID"=>{"$"=>"01114"},
        "CountryAbbr"=>{"$"=>"USA"},
        "FaxDisp1"=>{},
        "BuildCountry"=>{"$"=>"United States"}
      }
    },
    nil=>nil
  }
  
  </pre>
  
  <p>What's the easiest way to extract the value of "<code>DisplayName</code>" and "<code>InternalSMTPAddress</code>"?</p>