Allowing to set the personal IQRtools license key
If called without input arguments then the activation info is displayed. This info needs to be sent to email@example.com to obtain a license key. This license key then can be used as input argument to complete the activation of IQRtools.
license_IQRtools(licenseKey = NULL, display = FALSE)
IntiQuan provided license key. If license key is provided and correct, license information will be shown.
If set to TRUE then license information and expiration is shown.