Add thor to Gemfile/gemspec

Gemfile

@@ -1,9 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'rake'
-
-gem 'github_api'
-gem 'colorize'
+gemspec
 
 group :test do
   gem 'rspec'

Gemfile.lock

@@ -1,17 +1,25 @@
+PATH
+  remote: .
+  specs:
+    github_changelog_generator (1.3.11)
+      colorize (~> 0.7)
+      github_api (~> 0.12)
+      thor (~> 0.19)
+
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.6)
+    addressable (2.3.7)
     ast (2.0.0)
     astrolabe (1.3.0)
       parser (>= 2.2.0.pre.3, < 3.0)
-    colorize (0.7.4)
+    colorize (0.7.5)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.2.5)
-    faraday (0.9.0)
+    faraday (0.9.1)
       multipart-post (>= 1.2, < 3)
-    github_api (0.12.2)
+    github_api (0.12.3)
       addressable (~> 2.3)
       descendants_tracker (~> 0.0.4)
       faraday (~> 0.8, < 0.10)
@@ -19,13 +27,13 @@ GEM
       multi_json (>= 1.7.5, < 2.0)
       nokogiri (~> 1.6.3)
       oauth2
-    hashie (3.3.2)
-    jwt (1.2.0)
-    mini_portile (0.6.1)
-    multi_json (1.10.1)
+    hashie (3.4.0)
+    jwt (1.4.1)
+    mini_portile (0.6.2)
+    multi_json (1.11.0)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    nokogiri (1.6.5)
+    nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     oauth2 (1.0.0)
       faraday (>= 0.8, < 0.10)
@@ -36,7 +44,7 @@ GEM
     parser (2.2.0.3)
       ast (>= 1.1, < 3.0)
     powerpack (0.1.0)
-    rack (1.5.2)
+    rack (1.6.0)
     rainbow (2.0.0)
     rake (10.4.2)
     rspec (3.2.0)
@@ -59,14 +67,15 @@ GEM
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.4)
     ruby-progressbar (1.7.5)
-    thread_safe (0.3.4)
+    thor (0.19.1)
+    thread_safe (0.3.5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  colorize
-  github_api
-  rake
+  bundler (~> 1.7)
+  github_changelog_generator!
+  rake (~> 10.0)
   rspec
   rubocop

github_changelog_generator.gemspec

@@ -28,4 +28,5 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency('github_api', ['~> 0.12'])
   spec.add_runtime_dependency('colorize', ['~> 0.7'])
+  spec.add_runtime_dependency('thor', ['~> 0.19'])
 end