Initial commit of the input format for geometry objects.
Code cleaned up
added sample grid implementation
Merge remote-tracking branch 'origin/master'
Implemented the NodesReducer
added and tested Grid
merged bjoern's branch
Merge https://github.com/bjoernlohrmann/stratosphere-workshop-template
The InputFormat uses the PactGeometry value now.
Made the NodesReducer more efficient by removing an unnecessary list.
Merge https://github.com/komoot/stratosphere-workshop-template
Merge remote-tracking branch 'remotes/teots/master'
Merge remote-tracking branch 'remotes/schernic/master'
Added a PactList implementation.
Merge https://github.com/schernic/stratosphere-workshop-template
Implemented the Gridify operator.
Merge remote-tracking branch 'remotes/teots/master'
changed output format
optimized GeometryInputFormat