Add export of catalog as json to build directory

.gitignore

@@ -1,2 +1,3 @@
 coverage
 tmp
+build

Gemfile

@@ -5,6 +5,7 @@ source "https://rubygems.org"
 ruby File.read(File.join(__dir__, ".ruby-version")).strip
 
 gem "json-schema"
+gem "rake"
 
 group :test do
   gem "rspec"

Gemfile.lock

@@ -105,6 +105,7 @@ DEPENDENCIES
   guard-rubocop
   json-schema
   overcommit
+  rake
   rspec
   rubocop
   rubocop-rspec

Rakefile

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+task :environment do
+  require File.join(__dir__, "lib/catalog")
+end
+
+desc "Generates and exports the catalog to the default location"
+task export: :environment do
+  Catalog.new.export
+end

build/index.md

@@ -0,0 +1,2 @@
+# The Ruby Toolbox Catalog Export
+

lib/catalog.rb

@@ -21,6 +21,12 @@ def as_json
     }
   end
 
+  def export(path: File.join(__dir__, "../build/catalog.json"))
+    File.open(path, "w+") do |f|
+      f.puts JSON.pretty_generate(as_json)
+    end
+  end
+
   private
 
   def category_groups