[Buildbot] #3394: example on how to use REST and SSE api

[Buildbot trac]

#3394: example on how to use REST and SSE api
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Reporter:  tardyp       |      Owner:
    Type:  enhancement  |     Status:  new
Priority:  major        |  Milestone:  0.9.0
 Version:  0.9.0b4      |   Keywords:
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 it only requires 4(ish) lines of python-requests code in order to trigger
 a build, and wait for completion.

 We shall document it as the reason to keep the sse as an api for bb 0.9

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Ticket URL: <http://trac.buildbot.net/ticket/3394>
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Buildbot: build/test automation