Fix CreateProtectedEphemeralSequential to return a proper error if too many tries
Restart zookeeper server for every test.

Also, make it easier to start test clusters. This will allow testing of more scenarios.
Run tests on travis-ci by downloading zookeeper
Update jar search path to work with travis-ci
Export StartTestCluster to make it useable for other packages
Add another test state to TestSetWatchers.
Add tests for clustered operation (reconnect, ...)
Add travis-ci status to README
Merge pull request #1 from samuel/master

合并原仓库更新