Add all Lanyrd iPhone app headers

Added all remaining Lanyrd iPhone app headers to ensure successful receipt of data.

    conn.headers['User-Agent'] = "Lanyrd-iOS/2.4.0 (iPhone OS 6.1.3; iPhone5,2 N42AP) build/61"
    conn.headers['X-Lanyrd-Protocol'] = "4"
    conn.headers['X-Lanyrd-Hardware'] = "320x568@2"
    conn.headers['X-Lanyrd-DeviceID'] = "Device-String"
    conn.headers['X-Lanyrd-PushEnvironment'] = "ios-production"
    conn.headers['x-mycustomurl-intercept'] = "api"

I've also laxed the version requirement on hashie