How to make autocomplete working with twig files?

Hi,

I'm not able to autocomplete work into my twig files.
In my project I have this:
```
/images
/templates/.twig files
```

My config.cson (inspired by examples found in issues):
```
"autocomplete-paths":
scopes: [
{
scopes: [
"images"
]
prefixes: [
"include directory ~"
]
extensions: [
"png"
"jpg"
"jpeg"
"gif"
"twig"
]
replaceOnInsert: [
[
"(@[2-9]x)\\.png?$"
".png"
]
]
relative: true
includeCurrentDirectory: true
projectRelativePath: false
}
]
```

I would to autocomplete this kind of code:
` {% include directory ~ '/includes/dedicates_inc/inc_cdi_html.twig' %} `or for Sass Mixin:
`@include backgroundImage("PNG/liens@3x.png");`

thanks

Start by reproducing the missing completion with the shown config.cson and the example Twig and Sass paths. Check how the package interprets the configured scopes, prefixes, extensions, and relative paths; done means the requested Twig include and Sass image paths appear as completions.

Written by the indexing model from the issue text.