Update License
Update README.md
Add dummy virtio device
Remove interrupt handling from main loop and treat it directly when raised. l.rfe and l.mtspr must be altered accordingly because they can trigger interrupts
Improved timer handling. More stable, more reliable
replace google analytics - should not have been removed from gh-pages
Merge branch 'gh-pages' of https://github.com/s-macke/jor1k into gh-pages