Moved all installation instructions to the Wiki.

There were becoming so large they were muddling the README.

README.mdown

@@ -21,78 +21,7 @@ Or have a look at one of these screen casts:
 
 Installing git-flow
 -------------------
-
-### Mac OS
-If you're on a Mac and use [homebrew](http://github.com/mxcl/homebrew), it's simple:
-
-    $ brew install git-flow
-
-If you're on a Mac and use [MacPorts](http://macports.org/), it's simple:
-
-    $ port install git-flow
-
-### Linux, etc.
-Another easy way to install git-flow is using Rick Osborne's excellent git-flow
-installer, which can be run using the following command:
-
-	$ wget --no-check-certificate -q -O - https://github.com/nvie/gitflow/raw/develop/contrib/gitflow-installer.sh | sudo bash
-
-### Windows
-
-For Windows users, [msysgit](http://code.google.com/p/msysgit/) is a good
-starting place for installing git.
-
-#### Using Cygwin
-For Windows users who wish to use the automated install, it is suggested that you install [Cygwin](http://www.cygwin.com/)
-first to install tools like `git`, `util-linux` and `wget` (with those three being packages that can be selected
-during installation). Then simply run this command from a Cygwin shell:
-
-	$ wget -q -O - https://github.com/nvie/gitflow/raw/develop/contrib/gitflow-installer.sh | bash
-
-If you get the error "flags: FATAL unable to determine getopt version" error after 
-
-	$ git flow init
-
-you need to install the util-linux package using the Cygwin setup.
-
-
-#### Using [msysgit](http://code.google.com/p/msysgit/)
-Download and install `getopt.exe` from the [util-linux package](http://gnuwin32.sourceforge.net/packages/util-linux-ng.htm) into `C:\Program Files\Git\bin`. (Only `getopt.exe`, the others util-linux files are not used). Also install `libintl3.dll` from the Dependencies package, into the same directory. 
-
-Clone the git-flow sources from GitHub:
-
-	$ git clone --recursive git://github.com/nvie/gitflow.git
-	$ cd gitflow
-
-Run the `msysgit-install` script from a command-line prompt (you may have to
-run it with "Full Administrator" rights if you installed msysgit with its
-installer):
-
-	C:\gitflow> contrib\msysgit-install.cmd
-
-### Manual installation
-If you prefer a manual installation, please use the following instructions:
-
-	$ git clone --recursive git://github.com/nvie/gitflow.git
-
-Then, you can install `git-flow`, using:
-
-	$ sudo make install
-
-By default, git-flow will be installed in /usr/local. To change the prefix
-where git-flow will be installed, simply specify it explicitly, using:
-
-	$ sudo make prefix=/opt/local install
-
-Or simply point your `PATH` environment variable to your git-flow checkout
-directory.
-
-*Installation note:*  
-git-flow depends on the availability of the command line utility `getopt`,
-which may not be available in your Unix/Linux environment.  Please use your
-favorite package manager to install `getopt`.  For Cygwin, install the
-`util-linux` package to get `getopt`.  If you use `apt-get` as your install
-manager, the package name is `opt`.
+See the Wiki for up-to-date [Installation Instructions](https://github.com/nvie/gitflow/wiki/Installation).
 
 
 Integration with your shell