Add WinSCP guide to wiki

This was emailed to me in July 2020

wiki/source/winscp.md

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+--
+title: Editing your tilde.club site with WinSCP
+author: vincenz00
+category: tutorial
+---
+
+![noobsguide](https://user-images.githubusercontent.com/57832/132114126-bb862c2c-d7ea-4a88-b186-b36bbaeba89e.PNG)
+
+## Stuff you'll need:-
+
+1. tilde.club sign up confirmation email
+1. WinSCP ([download](https://winscp.net/eng/index.php))
+1. Public and private keys you used for signing up to tilde.club
+1. Decent knowledge in HTML(why are you even here otherwise?)
+
+## Steps to follow:-
+
+1. Hopefully by now you've got your sign up confirmation by email and are
+   looking forward to creating your own page, keep the password provided in
+   the back of your head, it comes into play later.
+1. Download and install WinSCP
+1. Now when you open WinSCP, you'll meet with the login page.
+1. Enter the following here:-
+   - Host name: tilde.club
+   - Username: username you used to sign up to tilde.club
+   - Password: the password given in the sign up confirmation email
+1. Now the final step before you go ahead and login. Go to
+   advanced=>SSH=>Authentication and under authentication parameters, add your
+   private key by locating it by using the file browser.
+1. Add your public key in the same tab by copying it from the file and
+   adding it to the  “Display public key” button.
+1. Close that tab and now save your preferences for making logging in
+   easier.
+1. Login and after logging in you can find your index.html file present
+   there.
+1. ???
+1. profit