This file explains how to use Social Stream Gem locally.
You have to add the next lines in a file called "config" in a folder called ".bundle"
So in "vish_folder/.bundle/config" you should have:

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BUNDLE_LOCAL__SOCIAL_STREAM-BASE: /home/username/workspace/social_stream
BUNDLE_LOCAL__SOCIAL_STREAM-DOCUMENTS: /home/username/workspace/social_stream