Support new License Acceptance option for PowerShellGet 1.5

Because of [Require License Acceptance Support in PowerShellGet](https://blogs.msdn.microsoft.com/powershell/2017/10/22/require-license-acceptance-support-in-powershellget/)

1. Check the version of the PowerShellGet module
1. If version is equal or higher than 1.5 then add parameter `-AcceptLicense`

Look into all scripts that reference `Install-Module`, `Save-Module` and `Update-Module`