Working directory for examples is significant

[artob]

When running "ernie -p 9999 -c example.cfg" directly from within the examples/ directory, things go haywire, with the following printed out time and again in an infinite loop:

=ERROR REPORT==== 31-Mar-2010::05:48:50 ===
Port <0.81.0> closed with {error,1}, restarting port...
ruby: No such file or directory -- examples/ext.rb (LoadError)

Perhaps the README ought to note that the examples must be run from the gem's/repository's base directory, in which case everything works just fine.