Frozen string literal (#16)

* frozen_string_literal -> true

* Fix FrozenError

* Add badges

Author: biow0lf

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 gemspec

README.md

@@ -1,4 +1,8 @@
 # Errbit Github Plugin
 
+[![RSpec](https://github.com/errbit/errbit_github_plugin/actions/workflows/rspec.yml/badge.svg)](https://github.com/errbit/errbit_github_plugin/actions/workflows/rspec.yml)
+[![RSpec on JRuby](https://github.com/errbit/errbit_github_plugin/actions/workflows/jruby.yml/badge.svg)](https://github.com/errbit/errbit_github_plugin/actions/workflows/jruby.yml)
+[![Ruby Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://github.com/standardrb/standard)
+
 This plugin provides GitHub issue tracker integration for Errbit and it is the
 only plugin included by default in Errbit.

Rakefile

@@ -1 +1,3 @@
+# frozen_string_literal: true
+
 require "bundler/gem_tasks"

errbit_github_plugin.gemspec

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'errbit_github_plugin/version'

lib/errbit_github_plugin.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "errbit_github_plugin/version"
 require 'errbit_github_plugin/error'
 require 'errbit_github_plugin/issue_tracker'

lib/errbit_github_plugin/error.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ErrbitGithubPlugin
   class AuthenticationError < Exception; end
 end

lib/errbit_github_plugin/issue_tracker.rb

@@ -1,14 +1,16 @@
+# frozen_string_literal: true
+
 require 'octokit'
 
 module ErrbitGithubPlugin
   class IssueTracker < ErrbitPlugin::IssueTracker
 
     LABEL = 'github'
 
-    NOTE = 'Please configure your github repository in the <strong>GITHUB ' <<
-           'REPO</strong> field above.<br/> Instead of providing your ' <<
-           'username & password, you can link your Github account to your ' <<
-           'user profile, and allow Errbit to create issues using your ' <<
+    NOTE = 'Please configure your github repository in the <strong>GITHUB ' \
+           'REPO</strong> field above.<br/> Instead of providing your ' \
+           'username & password, you can link your Github account to your ' \
+           'user profile, and allow Errbit to create issues using your ' \
            'OAuth token.'
 
     FIELDS = {

lib/errbit_github_plugin/version.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ErrbitGithubPlugin
   VERSION = '0.4.0'
 end

spec/issue_tracker_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe ErrbitGithubPlugin::IssueTracker do
   describe '.label' do
     it 'return LABEL' do

spec/spec_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'simplecov'
 
 SimpleCov.start