* Add custom SVGLint rule to lint the general <title> format
i.e. the <title> should be "[ICON_NAME] icon"
* Check if there exists an entry in simple-icons.json with the icon name
... found in the <title>
* Normalize all icons <title> value
* Fix mismatch between HTML's icon title and simple-icons.json title
... due to HTML special entities (such as `&`). Affected icons:
- AT&T (AT&T)
- Let's Encrypt (Let's Encrypt)
* Refactor .svglintrc.js
to make the code style more in line with scripts/prepublish.js
* Add SVG with invalid <title> format
* Add SVG with unknown title
* Revert 6912816 and f002504
* Remove `id` and `aria-labelledby` from all SVGs
* Update SVGLint configuration
* Remove `aria-labelledby` from documentation
* Remove `aria-labelledby` from website
because why not
* add new icons
- add icon for AT&T
- add icon for T-mobile
- add icon for Sprint
- add icon for Cricket
- add icon for Verizon
- add icon for Boost
- add icon for Framer
- add icon for Sketch
- Update _data/simple-icons.json with new icon data
* remove `<g>` from svg files
- remove `<g>` from svg files to address svglint error
* add apple pay
- Add apple pay
- Update simple-icons.json
* make changes per review
Changes were made based on review 9/9/18.
* fixed AT&T naming
