amberc: add help output for the '-D' flag
Add a favicon

I took the image from amber-lang.net and removed the reflection; then I
used http://www.favicon.cc to generate the favicon.
Merge pull request #518 from kpullen/add-favicon

Add a favicon
Merge pull request #517 from mkroehnert/compiler

amberc: add help output for the '-D' flag
Fixes issue #519
Merge branch 'master' into debugger