diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 989cb63..2c75cff 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,5 +1,5 @@
 # This configuration was generated by `rubocop --auto-gen-config`
-# on 2015-05-22 13:30:52 +0300 using RuboCop version 0.31.0.
+# on 2015-05-22 14:06:42 +0300 using RuboCop version 0.31.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -16,7 +16,7 @@ Metrics/BlockNesting:
 # Offense count: 3
 # Configuration parameters: CountComments.
 Metrics/ClassLength:
-  Max: 345
+  Max: 350
 
 # Offense count: 5
 Metrics/CyclomaticComplexity:
@@ -72,3 +72,8 @@ Style/Next:
 # Configuration parameters: EnforcedStyle, SupportedStyles, AllowInnerSlashes.
 Style/RegexpLiteral:
   Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/TrailingWhitespace:
+  Enabled: false
diff --git a/bin/github_changelog_generator b/bin/github_changelog_generator
index f0c5fd4..5d0d48a 100755
--- a/bin/github_changelog_generator
+++ b/bin/github_changelog_generator
@@ -1,4 +1,4 @@
 #! /usr/bin/env ruby
 
 require_relative "../lib/github_changelog_generator"
-GitHubChangelogGenerator::ChangelogGenerator.new.compound_changelog
+GitHubChangelogGenerator::ChangelogGenerator.new.run
diff --git a/lib/CHANGELOG.md b/lib/CHANGELOG.md
index a261d8f..3c6e8bd 100644
--- a/lib/CHANGELOG.md
+++ b/lib/CHANGELOG.md
@@ -1,8 +1,12 @@
 # Change Log
 
-## [Unreleased](https://github.com/skywinder/changelog_test/tree/HEAD)
+## [0.0.4](https://github.com/skywinder/changelog_test/tree/0.0.4) (2015-05-22)
 
-[Full Changelog](https://github.com/skywinder/changelog_test/compare/v0.0.3...HEAD)
+[Full Changelog](https://github.com/skywinder/changelog_test/compare/v0.0.3...0.0.4)
+
+**Closed issues:**
+
+- Test issue, that should appear in 0.0.4 [\#3](https://github.com/skywinder/changelog_test/issues/3)
 
 **Merged pull requests:**
 
diff --git a/lib/github_changelog_generator.rb b/lib/github_changelog_generator.rb
index 45c7909..21a055a 100755
--- a/lib/github_changelog_generator.rb
+++ b/lib/github_changelog_generator.rb
@@ -190,6 +190,18 @@ module GitHubChangelogGenerator
 
     # The entry point of this script to generate change log
     # @raise (ChangelogGeneratorError) Is thrown when one of specified tags was not found in list of tags.
+    def run
+      log = compound_changelog
+
+      output_filename = "#{@options[:output]}"
+      File.open(output_filename, "w") { |file| file.write(log) }
+      puts "Done!"
+      puts "Generated log placed in #{Dir.pwd}/#{output_filename}"
+    end
+
+    # Main function to start change log generation
+    #
+    # @return [String] Generated change log file
     def compound_changelog
       log = "# Change Log\n\n"
 
@@ -219,11 +231,8 @@ module GitHubChangelogGenerator
       end
 
       log += "\n\n\\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*"
-
-      output_filename = "#{@options[:output]}"
-      File.open(output_filename, "w") { |file| file.write(log) }
-      puts "Done!"
-      puts "Generated log placed in #{Dir.pwd}/#{output_filename}"
+      @log = log
+      @log = log
     end
 
     # The full cycle of generation for whole project
@@ -531,6 +540,6 @@ module GitHubChangelogGenerator
   end
 
   if __FILE__ == $PROGRAM_NAME
-    GitHubChangelogGenerator::ChangelogGenerator.new.compound_changelog
+    GitHubChangelogGenerator::ChangelogGenerator.new.run
   end
 end
diff --git a/lib/github_changelog_generator/generator.rb b/lib/github_changelog_generator/generator.rb
index fdc0943..345bc81 100644
--- a/lib/github_changelog_generator/generator.rb
+++ b/lib/github_changelog_generator/generator.rb
@@ -1,5 +1,11 @@
 module GitHubChangelogGenerator
   class Generator
+    # A Generator responsible for all logic, related with change log generation from ready-to-parse issues
+    #
+    # Example:
+    #   generator = GitHubChangelogGenerator::Generator.new
+    #   content = generator.compound_changelog
+
     def initialize(options = nil)
       @options = options
     end
@@ -42,5 +48,7 @@ module GitHubChangelogGenerator
 
       string
     end
+
+    
   end
 end