Public key authentication key files path as configurable option

Key files path for SFTP public key authentication was made configurable

git config git-ftp.sftp-key ~/.ssh/id_rsa
git config git-ftp.sftp-public-key ~/.ssh/id_rsa

implements resmo/git-ftp/#184
Renamed the parameter names to match curl options

Renamed --sftp-key to --key
Renamed --sftp-public-key to --pubkey
Merge branch 'release/0.8.4' into develop
Repo path wasn't updated
Merge pull request #1 from mamzellejuu/patch-1

Install document outdated. URL is pointing to the wrong repo.
Fixed typo in man page
Merge branch 'develop' of github.com:git-ftp/git-ftp into develop
Replaced equality operator '==' with '='
Updated man page to include the new options.
Merge pull request #6 from JoyceBabu/develop

Public key authentication key files path as configurable option
Fixed a minor formatting issue in INSTALL

The description of installing via Homebrew on OS X 10.8 isn't rendered as code in a Markdown renderer because it's missing a newline.
Merge pull request #14 from louisrli/patch-1

Fixed a minor formatting issue in INSTALL
Add action 'log'
Merge pull request #19 from adbre/action_log

Add action 'log'
Update README.md
Error: binary operator expected.

Patch on Windows 7 X64 (Build 7600) and Ubuntu 10.04.4 environment throwing error binary operator expected.
Update Windows installation instructions

Windows does support symlinks. Through command prompt, they must be created using the mklink command. Through bash, you can use the ln command
fix quoting of REMOTE_PASSWD
fix detection of curl verbosity setting
log deletion failure even when being verbose