fix implicit method name shadowing

Tests failed while implicitly converting String to Keyspace.
Conversions.keyspace() were not used due to name shadowing.
explicitly import language features

Avoid features warnings when compiling with scala 2.10
fix implicit warning conversion

scala.Predef.refArrayOps were implicitly used to convert the java Array[Byte]
(as returned by java.nio.ByteBuffer.array()) to scala ArrayOps[Byte].

However, Byte inherit from AnyVal and refArrayOps is bounded to T <: AnyRef

Clear warning by explicitly using Predef.byteArrayOps()
update dependency to cassandra 1.1.10
Merge pull request #3 from jlc/scala-2.10

Scala 2.10