Add version filer and gemspec
Bug fix for nested commands
Release Notes updated
Merge branch 'release/1.0.0'
Merge branch 'release/1.0.0' into develop
Merge pull request #1 from yo61/master

Add version file and gemspec
Merge branch 'master' into develop
Increased version number and added gemspec
Release Notes updated
Merge branch 'release/1.1.0'