Merge pull request #3 from nils-ohlmeier/gh-pages

always remove VP8 from the H264 offer
Merge pull request #4 from nils-ohlmeier/gh-pages

added option to require H264 and log failure
ekr's stun test
delay
make failure callbacks readable in the log
Copy
Add IP test
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages
cleanup and beautify output