I'm still trying to figure out what the defaults should be. At the moment
you have to explicitly pass in every file you want loaded into the output
binary. Maybe that control is a good thing. The examples need no libraries
so far.
Start requiring a '-o' flag to designate the output binary when translating.
Things currently get funky if you pass in multiple inputs, but that's ok.
This is the first step to supporting multiple input files for a single
output binary.
Modify helpers to run either external examples in the subx/teensy/
directory, or my own examples in subx/ directory.
Now I have to say `run test5` instead of `run 5`, and so on.
