I agree with Sven Plath. Nano is a great alternative. If you have Chocolatey setup. Install nano by typing the following in Powershell:
PS C:\dev\> choco install nano
Then, to edit somefile.txt enter:
PS C:\dev\> nano somefile.txt
It's pretty neat!
Edit: Nano works well on my Windows 10 box but takes incredibly long to load the first time on my Windows 7 machine. That made me switch to vim (vi) on my Win 7 laptop
PS C:\dev\> choco install vim
PS C:\dev\> vim $profile
Add a line in the powershell profile to Set-Alias (sal)
sal vi vim
Esc - : - x - Enter :-)