Polina Goltsman issue 10

"old:
   Responsible Peer:  The peer that is responsible for a specific
      resource, as defined by the plugin algorithm.
new:
   Responsible Peer:  The peer that is responsible for a specific
      resource, as defined by the topology plugin algorithm."

- As suggested.
Merge pull request #212 from petithug/polina-goltsman-issue-10

Polina Goltsman issue 10