this lib is used to integrate to e2pay
client := NewClient()
client.Host = "some-url"
client.ClientID = "some-key"
client.SecretKey = "some-secret"
client.SourceID = "123" // your source id
client.PartnerID = "2201121" // your patner id
client.LogLevel = 3 // your log level default 2
gw := CoreGW{
Client: client,
}
resp, err := gw.AuthH2H()