integrations.go
func (client *Client) CreateIntegrationSlack(slackIntegration *IntegrationSlackRequest) error {
	return client.doJsonRequest("POST", "/v1/integration/slack", slackIntegration, nil)
}
func (client *Client) CreateIntegrationSlack(slackIntegration *IntegrationSlackRequest) error {
	return client.doJsonRequest("POST", "/v1/integration/slack", slackIntegration, nil)
}
// CreateIntegrationSlack creates new Slack Integrations.
// Use this if you want to setup the integration for the first time
// or to add more channels.