import from https://github.com/TheHippo/git-archive-file
added man pages for git-archive-file
added git-archive-file to Readme.md
Execute a shell command, if the command is prefixed with !
Execute commands that are already prefixed with git directly
Added support for multiple arguments in git-changelog.
Added support for a --tag argument to directly set the tag name in the header.
Updated readme; included the --tag switch.
Adds the tag swtich to bash completion.
removed unnecessary git checkout for bug, feature and refactor
git-delete-merged-branches: use -D instead of delete-branch

too slow
Merge branch 'master' of github.com:visionmedia/git-extras
Merge pull request #169 from jgallen23/bug/index-lock

removed unnecessary git checkout for bug, feature and refactor
Merge pull request #168 from js-coder/master

git-repl improvements
Merge branch 'master' of github.com:visionmedia/git-extras
Merge pull request #165 from TheHippo/git-archive-file

Git archive file
Merge branch 'master' of github.com:visionmedia/git-extras
Merge pull request #102 from Phally/tag-in-command-line

Entering the tag name in the command line with git-changelog
Merge branch 'master' of github.com:visionmedia/git-extras
move docs target up