Run integration tests on Travis CI
Add an experimental integration Observed with EventMachine
Update gemspec for observed-eventmachine to build the gem
Add an example code to show concurrency achieved by using observed-eventmachine
Inherit attributes configured using Observed::Configurable to sub classes
Give each reporter a reference to the system to allow forwarding reports to other reporters
Merge branch 'em-integration' into develop
Merge branch 'inherit-attributes-to-subclass' into develop
Merge branch 'give-reporter-a-system' into develop