Van13: update OpsWorks talk abstract
Added modifications
Added almost all talks
Added closing talk
Merge pull request #582 from agoddard/portland

added D. Cooper proposal, PDX
[Portland 2013] Add Tim Smith proposal
added mongo db logo NYC
Modified program, due to speakers that submitted talks and can't come to Barcelona.
Merge pull request #584 from rhoml/master

Modified Barcelona program due to speakers that are not able to come to Barcelona.
Merge pull request #583 from webframp/tim-smith

[Portland 2013] Add Tim Smith proposal
Merge pull request #575 from philwhln/master

Van13: update OpsWorks talk abstract
added Tim Dysinger proposal for PDX