Spec typo.
Behavior test for iteration 01.
Engine class skeleton.
Opcode names (symbolic constants).
Add input and output for the Engine.
  * say hello to keyword arguments! :)
Added vm specs for instructions.
Instruction handling in the VM.
GETS, PUTS, TOS, TOI and ADD instructions.
Docs format for travis.
Spec for the engine interface.
Merge pull request #1 from chameleon-language/iteration_01

Iteration 01.