add documentation for installing via composer
Update composer.json

Add bin/mage to composer. See http://getcomposer.org/doc/articles/vendor-binaries.md.
Merge pull request #23 from fadoe/patch-1

Update composer.json
Merge pull request #22 from robertfausk/master

add ability to install via composer
Issue #21

PHAR Compiler.
Remove Symfony v1 commands.
Add new Run Command method which gusses on the deployment stage to run it local or remote.
Rewrite Symfony v2 Commands.
Add List Environment command.

mage list environments
Deploy Summary info. Deploy lock: only run one instance at a time.
Allow to fail a task with a message via Mage_Task_ErrorWithMessageException
Add license information.
Reference to Spyc Library License.
Big refactoring. Use of Namespaces and codestyles. PSR-0, PSR-1, PSR-2.
Fixes Issue #26
Deploy strategy is automatic.
Rollback.
Locking releases.
Tweaks on Compile.
Revert "Tweaks on Compile."

This reverts commit 426858cb00e2f0df2e0bad989d27724ca5a8cbd9.