Merge pull request #6 from sergeyk/dev

Syncing dev with master
cosmetic changes to map_through_rsync
modifying docs to live in one directory
Documentation and gh-pages in docs/ now.
Minor fix to links on website
Set redis/mongo host and port in config file.
Datasets section in docs, and cosmetic doc changes
Small fix in server-starting.
Better function to get image filenames for ids.
Misc. related changes
Integrated and improved feature computation code
WP dataset loads correctly; flickr stored as h5
Using caffe for feature computation.
Flickr dataset updated: now 20 styles, 4K examples
config.json.example and push_to_cluster bugfix
Porting Pinsplorer project to Vislab
80K datasets for Flickr and Pinterest finalized
cluster script
Merge branch 'dev'
Misc fixes to do caffe feat computation on cluster