Add support for installation as a gem.

.gitignore

@@ -1,2 +1,3 @@
 .yardoc
-doc
+doc
+*.gem

README.md

@@ -5,7 +5,18 @@
 ## What does dotrs do?
 
 dotrs uses a hidden git repository, placed in your `$HOME` folder to store
-the dotfiles you want to keep synchronized.
+the dotfiles you want to keep synchronized. Then it creates links to them in
+your file system at the right location.
+
+## Installation
+
+dotrs is installed as a Ruby gem. To install dotrs, use the following commands:
+
+```
+git clone https://github.com/Sevodric/dotrs && cd dotrs
+gem build dotrs.gemspec
+gem install dotrs
+```
 
 ## Setup
 
@@ -30,6 +41,16 @@ Once files have been added or modified, save the changes with:
 
 `$ dotrs push`
 
+### Retrieving changes
+
+Get the last changes from the remove:
+
+`$ dotrs pull`
+
+Link any new missing file with:
+
+`$ dotrs apply`
+
 ### Checking for tracked files
 
 Use the `list` command to view all currently tracked files.

bin/dotrs.rb → bin/dotrs

@@ -1,9 +1,9 @@
+#!/usr/bin/env ruby
 # frozen_string_literal: true
 
-$LOAD_PATH << '../lib/'
 require 'git'
 require 'optparse'
-require 'master_tree'
+require_relative '../lib/master_tree'
 
 EXIT_SUCCESS = 0
 EXIT_FAILURE = 1

dotrs.gemspec

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+Gem::Specification.new do |spec|
+  spec.name        = 'dotrs'
+  spec.version     = '2.0.0'
+  spec.date        = '2020-10-10'
+  spec.summary     = 'Straighforward dotfiles management'
+  spec.description = 'Straighforward dotfiles management'
+  spec.author      = 'Rémi Durieu'
+  spec.email       = '[email protected]'
+  spec.files       = [
+    Dir.glob('lib/**/*'),
+    'LICENSE',
+    'README.md'
+  ].flatten
+  spec.homepage    = 'https://github.com/Sevodric/dotrs'
+  spec.license     = 'MIT'
+  spec.executables << 'dotrs'
+
+  spec.add_runtime_dependency 'git', '~> 1.7'
+  spec.add_development_dependency 'rubocop', '~> 0.92'
+  spec.add_development_dependency 'test-unit', '~> 3.3'
+end