hubot 2.4.6 and xmpp 0.1.3
Revert "Upgrading Hubot to 2.3.4. and Hubot-scripts to 2.2.2"

This reverts commit e73556cdb6637d46eefe135555fc901d8d3e5546.
Merge branch 'hubot2_take2'
use hubot-xmpp