Add note to use same version numbers

[mlvandijk]

Should solve #17

[aslakhellesoy]

Can you convert this into a {{% tip %}} box instead?

Or better, make a red {{% note %}} box. Copy the tip.html shortcode to note.html and style it with red. See bulma docs for what css class to use.

[mlvandijk]

@aslakhellesoy I've added a {{% note %}} shortcode and tagged the notes as such.
Red was a bit much imho, so I opted to style in black ('is-dark') for now. Found the bulma info: https://bulma.io/documentation/components/message :)

[olleolleolle]

Is this a typo or the real class name?

[olleolleolle]

Looks good now!