Merge pull request #57 from kelaneren/master

Patch for redis cluster - contains 2 implementations of clustering
Merge pull request #58 from kelaneren/master

Patch for redis cluster bug fix and new feature
version upgraded to 2.9
Merge branch 'master' of https://github.com/debasishg/scala-redis
added API for pipelining without he transaction semantics - first cut. Non blocking based on Promises and Futures of Scala 2.10
added documentation
added documentation for ClusterNode and replaceServer functions
merged pull request https://github.com/debasishg/scala-redis/pull/59 by efuquen
a couple of stuff should have been val earlier
now builds with Scala 2.10.0-RC5
Now builds on Scala 2.10.0
fixed isuue #61
fixed wrong parameter passing in zrem