Keeps track of the current commit with a vundle_update tag before
perfoming an update and adds all commits pulled in the update to a
Changelog accessible via pressing 'u' after BundleInstall! completes.

- closes #110

- merge with view()
- no need for having both

- log is global array so log can be viewed any time
- log gets written to a defined location ~/.vim-vundle/vundle.log
- TODO: write log changes as they happen

- TODO: refactor: extract common code

- Bundles is not a good name for search
- BundleSearch undeprecated
- TODO: repurpose :Bundles cmd

- > active
- + updated
- . up to date
- ! error

- ! is error
- . is up-to-date
- * is updated

This reverts commit d840b24072.

- makes " quotes unusable

what was I thinking...?!

This reverts commit 035cc6ecba.

- unify search and browse unders same interface

- pass booleans instead '!'

- BundleClean now requires confirmation

- removes unused directories

- fixes https://github.com/gmarik/vundle/issues#issue/3
- TODO: not the most efficient approach

- vundle.vim - entrypoing and loader
- config.vim - configuration and runtimepath management
- installer.vim - installation and docs

- BundleInstall installs only not installed scripts
- BundleInstall! installs(updates) all scripts