Removed deprecated use of Gem.manage_gems. Added homepage to gemspec to make rubygems-1.3.2 happy.
Switched to jeweler.
Whoops... removed extra jeweler skeleton.
Improved support for configuration.

- Use `git config` directly, because it will normalize extra spaces,
  quotations, etc.
- Added support for a global configuration.
Added a real summary, and a requirement on git 1.6.0.0 to gemspec.
Added a warning if you're using an old version of git.
Version bump to 1.2.0
Regenerated gemspec for version 1.2.0
Moved logic to determine if git command meets required version down into Git::Lib, so other libraries can make use of it.
Version bump to 1.2.1
Regenerated gemspec for version 1.2.1
Account for not having a tiny git version (ie 1.6.4)
Version bump to 1.2.2
Regenerated gemspec for version 1.2.2
Switch over to new jeweler rubyforge tasks.
Fixed github url, and updated install instructions to use rubyforge.
Escape with double quotes instead of single
Version bump to 1.2.3
Regenerated gemspec for version 1.2.3