Add maven to nutch
Delete some nutch folder
Reconstruct nutch
Update hibench-config
Update nutchindexing run script
Fully separate Nutch code from HiBench
Modify maven directory structure
Revise hibench version number in POM
Unify MRv1 and MRv2 in nutchindexing
Run maven in a script
Get nutch bin by maven
Change to download-maven-plugin
Merge pull request #56 from qiansl127/nutch-reconstruction

Nutch reconstruction