Some cleanup
A Context instance keeps track of which instruction is being executed,
and allows for JMP-like instructions which can change the instruction
pointer
Test stub for Context
scala 2.10.1 -> 2.10.3
Context stub
Context now uses an Instruction Pointer to execute instructions
Added two Instructions for manipulating the Instruction Pointer.

Currently only jumping forwards is allowed, to prevent Genes from
ending up in an infinite loop
removed commented out stuff
Merge branch 'feature/stack-machine' into develop