[Buildbot] #3442: document usage of IPlugin subclasses

[Buildbot trac]

#3442: document usage of IPlugin subclasses
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Reporter:  rutsky     |       Owner:  sa2ajj
    Type:  undecided  |      Status:  assigned
Priority:  major      |   Milestone:  0.9.+
 Version:  master     |  Resolution:
Keywords:             |
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Changes (by dustin):

 * owner:   => sa2ajj
 * status:  new => assigned


Comment:

 Misha, is this something you could work on?

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Ticket URL: <http://trac.buildbot.net/ticket/3442#comment:1>
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