Como instalar Composer en Mac OSx

Pasos para instalar composer en MAC OSx:

1. Debemos abrir el terminal ⌘+space y escribimos Terminal
   
2. Nos dirigimos a la carpeta tmp

   cd /tmp

3. Descargamos el paquete de composer a través de curl

   curl -sS https://getcomposer.org/installer | php

4. Movemos el archivo phar para tenerlo de forma global

   mv composer.phar /usr/local/bin/composer

5. Revisamos que se haya actualizado correctamente para ello realizamos composer -v deberiamos obtener lo siguiente:

   Franciss-MacBook-Pro:tmp FraGoTe$ composer -v
   ______
   / ____/___ ____ ___ ____ ____ ________ _____
   / / / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/
   / /___/ /_/ / / / / / / /_/ / /_/ (__ ) __/ /
   \____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
   /_/
   Composer version 1.0-dev (8775c948956c9e0e0a5fd723cd84c94b3ea3d7e9) 2015-07-01 09:29:53
   Usage:
   command [options] [arguments]
   
   Options:
   --help (-h) Display this help message
   --quiet (-q) Do not output any message
   --verbose (-v|vv|vvv) Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
   --version (-V) Display this application version
   --ansi Force ANSI output
   --no-ansi Disable ANSI output
   --no-interaction (-n) Do not ask any interactive question
   --profile Display timing and memory usage information
   --working-dir (-d) If specified, use the given directory as working directory.
   
   Available commands:
   about Short information about Composer
   archive Create an archive of this composer package
   browse Opens the package's repository URL or homepage in your browser.
   clear-cache Clears composer's internal package cache.
   clearcache Clears composer's internal package cache.
   config Set config options
   create-project Create new project from a package into given directory.
   depends Shows which packages depend on the given package
   diagnose Diagnoses the system to identify common errors.
   dump-autoload Dumps the autoloader
   dumpautoload Dumps the autoloader
   global Allows running commands in the global composer dir ($COMPOSER_HOME).
   help Displays help for a command
   home Opens the package's repository URL or homepage in your browser.
   info Show information about packages
   init Creates a basic composer.json file in current directory.
   install Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.
   licenses Show information about licenses of dependencies
   list Lists commands
   remove Removes a package from the require or require-dev
   require Adds required packages to your composer.json and installs them
   run-script Run the scripts defined in composer.json.
   search Search for packages
   self-update Updates composer.phar to the latest version.
   selfupdate Updates composer.phar to the latest version.
   show Show information about packages
   status Show a list of locally modified packages
   update Updates your dependencies to the latest version according to composer.json, and updates the composer.lock file.
   validate Validates a composer.json