Add Rakefile to simpify building and testing. Add 3 test targets: the demo app itself, the Finder and some process that doesn't even exist (its PID < 0)
Add Rakefile to simpify building and testing. Add 3 test targets: the demo app itself, the Finder and some process that doesn't even exist (its PID < 0)

rodionovd/RDProcess,rodionovd/RDProcess