Gem infrastructure

Author: kddnewton

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "bundler"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/main.yml

@@ -0,0 +1,32 @@
+name: Main
+on:
+- push
+- pull_request_target
+jobs:
+  ci:
+    name: CI
+    runs-on: ubuntu-latest
+    env:
+      CI: true
+    steps:
+    - uses: actions/checkout@master
+    - uses: ruby/setup-ruby@v1
+      with:
+        bundler-cache: true
+        ruby-version: '3.1'
+    - name: Test
+      run: bundle exec rake test
+  automerge:
+    name: AutoMerge
+    needs: ci
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request_target' && github.actor == 'dependabot[bot]'
+    steps:
+    - uses: actions/github-script@v3
+      with:
+        script: |
+          github.pulls.merge({
+            owner: context.payload.repository.owner.login,
+            repo: context.payload.repository.name,
+            pull_number: context.payload.pull_request.number
+          })

Gemfile.lock

@@ -23,6 +23,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-21
+  x86_64-linux
 
 DEPENDENCIES
   bundler

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2022-present Kevin Newton
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -0,0 +1,73 @@
+# SyntaxTree::CSS
+
+[![Build Status](https://github.com/ruby-syntax-tree/syntax_tree-css/actions/workflows/main.yml/badge.svg)](https://github.com/ruby-syntax-tree/syntax_tree-css/actions/workflows/main.yml)
+[![Gem Version](https://img.shields.io/gem/v/syntax_tree-css.svg)](https://rubygems.org/gems/syntax_tree-css)
+
+[Syntax Tree](https://github.com/ruby-syntax-tree/syntax_tree) support for CSS.
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem "syntax_tree-css"
+```
+
+And then execute:
+
+    $ bundle install
+
+Or install it yourself as:
+
+    $ gem install syntax_tree-css
+
+## Usage
+
+From code:
+
+```ruby
+require "syntax_tree/css"
+
+pp SyntaxTree::CSS.parse(source) # print out the AST
+puts SyntaxTree::CSS.format(source) # format the AST
+```
+
+From the CLI:
+
+```sh
+$ stree ast --plugins=css file.css
+(css-stylesheet
+  (style-rule
+    (selectors
+      (type-selector (delim-token "*"))
+    )
+    (declarations
+      (declaration hello (ident-token "world"), (semicolon-token))
+    )
+  )
+)
+```
+
+or
+
+```sh
+$ stree format --plugins=css file.css
+* {
+  hello: world;
+}
+```
+
+or
+
+```sh
+$ stree write --plugins=css file.css
+file.css 1ms
+```
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/ruby-syntax-tree/syntax_tree-css.
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).