add quickstart section to README

[eduardoarandah]

Using luasnips functions directly feel like a job for a compiler 😅

We are all super busy and lazy, that's why I've added a quickstart so luasnips can be used just as easy as textmate!

For example, adding [==========[ makes it super easy for the eyes to locate the "template"

easy-for-the-eyes.mp4

I also added two commands:

• EditLuasnipSnippets to quickly jump to your luasnip snippets
• PasteAsLuasnipSnippet to paste your clipboard content as a snippet (escaping { } signs as {{ }})

See them in action:

create-snippets.mp4

[eduardoarandah]

For reference: vscode snippets are ugly, I don't feel like creating anything in that format:

textmate is super easy! however it's impossible to use functions

This is art