Merge pull request #85 from haijieg/master

User size_t counter in conting_sort
Fix to approximate_diameter to compile on clang.
Merge pull request #86 from ylow/master

Fix to approximate_diameter to compile on clang.
Minor fix in engines doc: elapsed_time -> elapsed_seconds
improved svd performance, fixed a bug of missing orthognoalization step
Merge pull request #89 from dbickson/master

improved svd performance, fixed a bug of missing orthognoalization step
fixed svd code to compile
Merge pull request #90 from dbickson/master

fixed svd code to compile
fix a documentation bug in using.dox as pointed by jeff zhang
Merge pull request #93 from dbickson/master

fix a documentation bug in using.dox as pointed by jeff zhang
added a comment about unnormalized pagerank results
Merge pull request #94 from dbickson/master

added a comment about unnormalized pagerank results
Merge pull request #87 from iglesias/master

Minor fix in engines doc: elapsed_time -> elapsed_seconds
fixed a bug when reading initial vector from file in svd, added prediction support for svd
Merge pull request #95 from dbickson/master

fixed a bug when reading initial vector from file in svd, added predicti...
cleaned svd output to use two output files (for matrices U and V)
cleaning svd output generation and simplying documentation
Merge pull request #96 from dbickson/master

cleaning svd output and improving and simplifying documentation
finally removed transform_vertices call
Merge pull request #97 from dbickson/master

finally removed transform_vertices call