Updated travis build scripts (from rspec-dev)
Merge pull request #1521 from rspec/update-travis-build-scripts-2014-05-09-for-master

Updates from rspec-dev (2014-05-09)
fix regression in formatting of backtraces
Merge pull request #1523 from rspec/fixup_formatter_regression

Fix formatter regression with message_lines
move state to reporter
send ExamplesNotification on stop containing all examples started
use notifications for pending examples
extract rerun commands to summary
convert reporter to attributes
factory method to pick notification
wrap up rerun_commands to notification
use factory for example types everywhere
update docs
[skip ci]