Simple clock added. Adding in correct order.
events with consequences test
Files from other branch deleted.
Cable, Port, BasicEvents, tick() w Clock, intervalGenerator interface,
Event base class instead of interface
Events changes cable state. 
Cable and port depends on each other (in ugly way)
port tests
cable test 
"==" instead of "equals"
simulation finish condition
events logging + simulation sandbox (collisions look ok)
Cable cannection bug fixed
Adding events with time==currentTime
interval generator of next events bug fixed
Network devices (classes without content)
Package included in events.
ComputerSendsEvent
two computers communicated via hub
small changes
Merge pull request #1 from Teleinformatyka/feature/simulationClock

Feature/simulation clock
add travis.yml
oracle jdk
script
install