Adds iTests for listing keys.

Fixes the RiakFuture listener issue

Adds parallelization to list buckets test and ITestBase for
emptying a bucket.
Adds itests for fetchOperation
Added itest for StoreOperation

Fixes bug with vclock in StoreOperation.

Left other items commented but unchanged due to knowing some
changes are coming.
Update README.org

Updated branch links
Added iTest for MR

Basic MR query that returns a result.

Fixed a small bug in the operation where an empty "done" PB message
would end up causing an extra result to be appended to the list.
Merge pull request #308 from basho/gh301-itest-list-keys

Adds iTests for listing keys.
Merge pull request #311 from basho/gh286-itest-fetch

Adds itests for fetchOperation
Merge pull request #314 from basho/gh300-itest-store

Added itest for StoreOperation
Merge pull request #315 from basho/gh298-itest-mr

Added iTest for MR
Merge branch 'master' into gh312-gh296-bucket-type-ops-itest

Conflicts:
	src/test/java/com/basho/riak/client/core/operations/itest/ITestBase.java