Auto update does not work on machines with Powershell version < 3

[maczikasz]

• Version: LATEST

• Target: NSIS

The auto updater was changed to use "Convert-from-json" function which was introduced in powershell 3, so on windows 7 machines without powershell 3 it will not work. If that's intented we will need to adjust our system requirements, please tell me if there is a way to make it backward compatible.

Thanks

[develar]

@MariaDima I will disable this functionality as discussed on Windows 7.

[MariaDima]

I prepared a PR.
Should I commit it, or you are already working on it?

[MariaDima]

If you have a better idea on how to handle it, we can close the pull request :-)