tweaked README.md
tweaked comments
added Phing support
added custom Phing task EnvTask.php
added custom Phing task PhpIncludeTask.php
added 'test' target to build.xml
added Phing properties file
Phing phar target uses a custom stub file
PhpIncludeTask.php uses include_once
tweaked build.xml
comment tweaks for stub.php
modified .travis.yml to use Phing
added deprecation warnings to setup.py and bootstrap.php
Phing updates for README.md