fix command line options "-v" and "--version"
Merge pull request #57 from gunjisatoshi/hotfix-command-line-version-option

fix command line options "-v" and "--version"
update self verion on Gemfile.lock
added rake
enforce TZ valiables
github.com/mzp -> github.com/atig
http://github.com/ -> https://github.com/
http://twitter.com -> https://twitter.com
add workaround for http error
update URI of UpdateChecker