Introduce Inter font (#10)

Also does the following:

* Adds README
* Bump gem to v0.0.10
* Bump rubocop-discourse version
* Change ruby matrix to be v3.0+ only, no need for old versions like 2.5 to be tested

Author: martin-brennan

.github/workflows/ci.yml

@@ -14,10 +14,8 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - 2.5
-          - 2.6
-          - 2.7
-          - 3.0
+          - 3.3
+          - 3.4
 
     steps:
       - uses: actions/checkout@v2

README.md

@@ -0,0 +1,23 @@
+## Discourse Fonts
+
+This gem is used to distribute all fonts used for the [Discourse forum software](https://discourse.org/). The main repository for Discourse is [https://github.com/discourse/discourse](https://github.com/discourse/discourse).
+
+This gem can be found on RubyGems at [https://rubygems.org/gems/discourse-fonts](https://rubygems.org/gems/discourse-fonts).
+
+### Adding fonts
+
+Most fonts in this gem are from Google Fonts. When adding a new font, this is the process:
+
+1. Download the font from Google Fonts
+2. Make sure the license is added to a text file in vendor/assets/fonts. Sometimes the license will already be present, e.g. OFL is a common license.
+3. Copy the downloaded .ttf files to vendor/assets/fonts
+4. Add the font name, stack, and variants for e.g. different weights to lib/discourse_fonts.rb following the existing examples
+5. Bump the VERSION in this file
+
+To test this gem out locally, you can change the discourse/discourse gemfile to point to your local copy of this gem using the `path` option:
+
+```
+gem 'discourse-fonts', path: '/path/to/discourse-fonts'
+```
+
+Discourse symlinks the fonts in vendor/assets/fonts to the public/fonts directory, and it should update this symlink when you install the gem from the local path.

discourse-fonts.gemspec

@@ -1,21 +1,29 @@
 # frozen_string_literal: true
 lib = File.expand_path("../lib", __FILE__)
-$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+$LOAD_PATH.unshift(lib) if !$LOAD_PATH.include?(lib)
 require "discourse_fonts"
 
 Gem::Specification.new do |s|
-  s.name        = "discourse-fonts"
-  s.version     = DiscourseFonts::VERSION
-  s.summary     = "Bundle of customizable Discourse fonts"
-  s.description = "Bundle of fonts which can be used to customize the look of Discourse"
-  s.authors     = ["Bianca Nenciu"]
-  s.email       = "bianca.nenciu@discourse.org"
-  s.files       = Dir["lib/*.rb", "vendor/assets/fonts/*.ttf", "vendor/assets/fonts/*.woff", "vendor/assets/fonts/*.woff2", "vendor/assets/fonts/*.otf"]
-  s.homepage    = "https://github.com/discourse/discourse-fonts"
-  s.license     = "MIT"
+  s.name = "discourse-fonts"
+  s.version = DiscourseFonts::VERSION
+  s.summary = "Bundle of customizable Discourse fonts"
+  s.description =
+    "Bundle of fonts which can be used to customize the look of Discourse"
+  s.authors = ["Bianca Nenciu"]
+  s.email = "bianca.nenciu@discourse.org"
+  s.files =
+    Dir[
+      "lib/*.rb",
+      "vendor/assets/fonts/*.ttf",
+      "vendor/assets/fonts/*.woff",
+      "vendor/assets/fonts/*.woff2",
+      "vendor/assets/fonts/*.otf"
+    ]
+  s.homepage = "https://github.com/discourse/discourse-fonts"
+  s.license = "MIT"
 
-  s.required_ruby_version = ">= 2.5.0"
+  s.required_ruby_version = ">= 3.3.0"
 
   s.add_development_dependency "rake", "~> 13.0"
-  s.add_development_dependency "rubocop-discourse", "~> 2.4.1"
+  s.add_development_dependency "rubocop-discourse", "~> 3.9"
 end