Improve README.md.
Fix string null error to exe release.
Merge branch 'develop'
Improve README.md.
Merge branch 'readme'
Fix to leave develop dependency require.
Update to version 0.0.3.
Add gem version badge.
Add new TODO and replace old TODO in another words.
Merge branch 'readme'
Prepare test environment with rspec.
Add test for Wloger::VERSION.
Refactoring to rename Wloger::Editor to Wloger::LogFile.
Change saved directory format.
Merge branch 'develop' into rspec

Conflicts:
	lib/wloger/command.rb
Add test for Wloger::Directory.
Improve Gemfile and install guard.
Merge branch 'readme' into develop
Fix bug not to call Wloger::Directory.remove_today.
Merge branch 'rspec' into develop