Add ChangeLog
Change author
Merge branch 'v2'
Add .travis.yml
Test 2.0.0 instead of ruby-head
Fix time format to iso8601
Use UTC timezone for testing
Add build status image from Travis CI
Fix typo..
Add require "time" to use Time#iso8601
Fix bug: Dotfile isn't created correctly at ec2ssh init
Delete dotfile before run examples
Use ENV['HOME'] instead of '~'
Fix bug: ssh_config path is blank when options.path is blank
Write how to use multiple keys
Add 2.0.1
Bumped to 2.0.1
Add 'How to upgrade'
Update README.md
fix conditional expression for empty 'Name Tag'

name_tag[:value], when it is empty, return nil