Added import to compile on Processing 2.0b7

As per http://code.google.com/p/processing/issues/detail?id=1475 some
import statements need to be added to code with the Processing 2.0b7
build. osPID_FrontEnd uses both File and FileNotFoundException, so all
of java.io.* was included.
Updated "profiles" path construction

Changed from "user.dir" to the Processing function sketchPath(""). The
former will be the directory the program is running from whereas the
latter is the actual location of the file that is being run, which is
what we want because the "profiles" directory is relative to the
osPID_FrontEnd.pde file.
Merge pull request #6 from kejaed/master

Compile with latest Processing and "profiles" path construction update.