Initial commit of documentation source.
Don't build 'docs' branch
More work on documentation -- installation of ReproZip.
Ongoing work on documentation -- packing experiments.
Merge branch 'docs' of github.com:ViDA-NYU/reprozip into docs
Ongoing work on documentation:

- Added Python 2.7.3 to software dependencies
- More work on packing experiments
Ongoing work on docs: packing experiments.
Finished packing section.
Merge branch 'master' of github.com:ViDA-NYU/reprozip into docs
Changes to Packing.
Work on unpacking documentation.
Ongoing work on documenting the unpacking step.
Ongoing work on documenting the unpacking step.
Work on documentation for reprounzip directory.
Work on documentation for reprounzip chroot.
Work on documentation for reprounzip installpkgs.
More work on documentation for reprounzip installpkgs.
More work on reprounzip - further consideration.
Work on reprounzip documentation - Vagrant plugin.
Work on reprounzip documentation - Docker plugin.