Added default log4j configuration
[FIX] forced initialization of vetexes
Merge branch 'develop'
[FIX] Sampling for ranking methods. The giraph has this thing about
optimizing the edge itarators. So you can not simply iterate and put
these into a collection. you need to do a copy...

[FIX] sampling now sends messages to all relevant...
[FIX] test adapted to the current sampling technique
Merge branch 'develop'
Initial implementation of triangle counting
kmeans clustering implementation and simple tests
Merge branch 'master' of https://github.com/grafos-ml/okapi into kmeans_clustering
fixes bug with euclidean distance computation
added 2 more tests, using Stratosphere's KMeansDataGenerator
correct vertexID type in OutEdges
Fix in PrefixHashPartitionerFactory, compatibility with latest Giraph
Merge pull request #10 from dlogothetis/partitioner-fix

Fix in PrefixHashPartitionerFactory, compatibility with latest Giraph
refactoring changes
deleted unecessary tests
Merge pull request #9 from vasia/kmeans_clustering

K-means clustering
Release 0.3.4.
Maximum b-matching algorithm
git ignore eclipse