Updated dependencies

```
 Problem 1
    - symfony/monolog-bundle v2.6.0 requires monolog/monolog ~1.8 -> satisfiable by monolog/monolog[1.10.0, 1.11.0, 1.8.0, 1.9.0, 1.9.1].
    - symfony/monolog-bundle v2.6.1 requires monolog/monolog ~1.8 -> satisfiable by monolog/monolog[1.10.0, 1.11.0, 1.8.0, 1.9.0, 1.9.1].
    - Can only install one of: monolog/monolog[1.6.0, 1.10.0].
    - Can only install one of: monolog/monolog[1.6.0, 1.11.0].
    - Can only install one of: monolog/monolog[1.8.0, 1.6.0].
    - Can only install one of: monolog/monolog[1.9.0, 1.6.0].
    - Can only install one of: monolog/monolog[1.9.1, 1.6.0].
    - phergie/phergie-irc-bot-react 1.0.0 requires monolog/monolog 1.6.* -> satisfiable by monolog/monolog[1.6.0].
    - Installation request for phergie/phergie-irc-bot-react ~1.0 -> satisfiable by phergie/phergie-irc-bot-react[1.0.0].
    - Installation request for symfony/monolog-bundle ~2.6 -> satisfiable by symfony/monolog-bundle[v2.6.0, v2.6.1].
```