Issue #367. Set chai.Assertion.includeStack = true to show assertion failure line numbers.
Merge pull request #368 from btbinhtran/issue367

Issue #367
Update packages/tower-middleware/server/agent.coffee

fix exception:
TypeError: Object Mac OS X 10.8.2 has no method 'match'
    at Object.Tower.MiddlewareAgent [as handle] (/home/erundook/towertest/node_modules/tower/packages/tower-middleware/server/agent.coffee:14:23)
Merge pull request #376 from erundook/patch-1

fix agent detection bug: TypeError: Object Mac OS X 10.8.2 has no method 'match'