Readability improvement for the vim commands.

Still keep :Bundle backwards compatible.

- closes many issues )

Interactive mode restored. Fixes issue #407.

Allows Bundle plugin folder renaming.

Bundle configuration options that are inferred from the bundle specs
overwrite user provided ones. This used to prevent users from changing
the name of directory where the cloned bundle should go, for instance.

Keep the user provided options with a preference over inferred ones.

Use the global bundles instead of reinitializing

Should fix #231.

Vimdoc Update Based On New Readme

vundle.txt update: explain directory argument to :Bundle & fix Vundle path

Add some documentation to explain the directory argument (optional second
argument) to the Bundle command.  Maybe fixes #295

- resolve introduced in 08e9894d2 resolves only bundle dir
- so '/doc/' dir doesn't loose its trailing slash

Add A CONTRIBUTING.md file to root.

Merging in new updated README. Wiki changes will be updated as well.

Some documentation fixes and changes to the VimDocs.

1. Fixed some lines which were wider than 78 characters.
2. Added a couple of more borders above all the sub-sections.
3. Moved about part above the TOC, seems unnecessary to have that as its
own section when it's so small. This also look more like a  default vim
help file.
4. Changed "NOTE:" into "Note that" because that is more like how it's
used in default vim files.
5. Changed some wording like "the plug-in manager" to "a
plug-in manager".
6. Moved a couple of *tag names* below their headings so it's like that
everywhere in the file.

- until we figure out how to manage it…

Helptags seems to fail if some of the path components it receives are
symlinks. So resolve the symlink when calling helptags.

Improve README formatting, fix links

In Windows, some users set the Cygwin shell as their Vim shell, make
Vundle consider this when deciding which flavour of commands to run when
cloning. Roughly check if the shell contains `sh` in it, and assume a
Unix shell, even when on Windows.

fix code formatting, fix grammar and capitalization, update links, and much more

make the doc/vundle.txt the same as README.md

Use the default value of &rtp to be operating system independant.  Move
the /after directories at the end and the other default directories at
the beginning of &rtp.

Known issues
* If a user removes one of the default directories from &rtp it will be
  added again.
* If a user added some other directory manually it might end
  up in an unintended place.

Use the default value of &rtp to be operating system independant.  Move
the /after directories at the end and the other default directories at
the beginning of &rtp.

Known issues
* If a user removes one of the default directories from &rtp it will be
  added again.
* If a user added some other directory manually it might end up in an
  unintended place.

The paths ~/.vim and ~/.vim/after where hardcoded so this might be an
*NIX only solution.

Could close #244.

This seems like a brute force method but it does the job on Mac OS X (I
suspect on all *nix systems).

Could close #244.

Failures in :helptags commands for individual bundles were logged but
the error were not propagated to the installer.

Warn the user when a leading or trailing space is found in one the
bundle specs they have configured using the Bundle command.

Ignore .netrwhist" until rtp ordering is fixed

Because vundle modifies the directory that appears first in the rtp, some files that vim generates in the first directory in rtp end up in the vundle directory. This is a known issue in vundle but until it is resolved, ignore .netrwhhist when found in the vundle directory.

The wildignore setting affects the behaviour of the `= shorthand, so
this changeset replaces the last remaining use of such construct with a
call to exec.

Certain wildignore values prevented the various logs from being
viewable.

Fixes #249

Fix wiki links

Github's new way of handling relative links broke some of the
links in the readme file.

Seems to have broken with GitHub's relative link change https://github.com/blog/1395-relative-links-in-markup-files