Added System and Experiment implementations for Spark.
Create README.md
Fixes for Spark.
Rename Stratosphere to Flink in README
Update README.md
Merge pull request #1 from rmetzger/patch-2

Update README.md
Merge pull request #7 from uce/patch-1

Rename Stratosphere to Flink in README
Added Flink, HDFS 2 extensions.

* Added support for Flink.
* Added support for Hadoop 2.
* Renamed Hadoop beans to Hadoop 1.
* Reorganized packages.