Add curl `-L\' option [ci skip]
Merge pull request #237 from rochefort/fix-installation

Add curl `-L\' option [ci skip]
Add yaml file for configuration
Add custom virtual variants feature
Add feature to install a extension for a php version without switching the php version
Correct issue in composer
Fix custom virtual variants issue
Add yaml module to the compile file
Fix invalid argument supplied for foreach() error
Add new virtual variant 'neutral'.
Ignore --with-libdir compile option in testNeutralVirtualVarint method.

Whether the compile option is used or not depends on client environments.
Remove the HHVM build from .travis.yml

The HHVM build currently makes our builds failed because there is
no phpize command in HHVM build's environment on Travis CI.
Futheremore, almost all PHP extensions only support PHP implemented by
Zend.
Merge pull request #245 from shinnya/feature/neutral_virtual_variant

Add a new virtual variant 'neutral'.
Install phpunit.phar as phpunit into PHPBREW_BIN via "phpbrew install-phpunit".
Merge pull request #247 from shinnya/feature/switch-to-phpunit.phar

Install phpunit.phar as phpunit into PHPBREW_BIN via "phpbrew install-phpunit"
Merge remote-tracking branch 'upstream/master'
Merge pull request #242 from GM-Alex/master

Add comfort functionality and make phpbrew more configurable
update phpbrew url

other points might change too, but this quick commit will prevent frustration in the meantime.