Updated changelog with pull request #11.
Added loadtest test for maxSeconds, not working.
Merge branch 'master' of github.com:alexfernandez/loadtest
Stop timeout when high-res timer stops.
Added missing callback to tests.

Stop timeout if load test is stopped.
Added loadtest tests.
Removed exports.run() since it is not used, and noAgent option.
Do not use option noAgent, just agent.
Use the timeout to stop in loadtest.
Show more complete information: agent, concurrency and so on.