Return statements are no longer functions. Fixes #31

Signed-off-by: Christian Gunderman <christian@sonofboss.cwru.edu>
Fixed "Missing '{'" error masking other errors.

Signed-off-by: Christian Gunderman <christian@sonofboss.cwru.edu>
sys_getline() no longer ends with a /n char.
Implemented == and != for booleans
Fixed string '+' concat order.
Created new example script showing off more functions.
Removed print statements in console app.
If execution is successful, you no longer get File Size, and Script Output messages. Output is 100% generated by the script.
Added file_close() call to example script.

Signed-off-by: Christian Gunderman <christian@sonofboss.cwru.edu>