unable to install phpdox using composer

[punramesh]

Command:
composer global require theseer/phpdox

Error message:
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for theseer/phpdox ^0.11.2 -> satisfiable by theseer/phpdox[0.11.2].
- Conclusion: remove phpunit/php-timer 2.0.0
- Conclusion: don't install phpunit/php-timer 2.0.0
- theseer/phpdox 0.11.2 requires phpunit/php-timer ^1.0 -> satisfiable by phpunit/php-timer[1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9].
- Can only install one of: phpunit/php-timer[1.0.3, 2.0.0].
- Can only install one of: phpunit/php-timer[1.0.4, 2.0.0].
- Can only install one of: phpunit/php-timer[1.0.5, 2.0.0].
- Can only install one of: phpunit/php-timer[1.0.6, 2.0.0].
- Can only install one of: phpunit/php-timer[1.0.7, 2.0.0].
- Can only install one of: phpunit/php-timer[1.0.8, 2.0.0].
- Can only install one of: phpunit/php-timer[1.0.9, 2.0.0].
- Installation request for phpunit/php-timer (locked at 2.0.0) -> satisfiable by phpunit/php-timer[2.0.0].

Installation failed, reverting ./composer.json to its original content.

[theseer]

See #328 (comment)