Merge pull request #2 from rmmh/gh-pages

Add the original example chip8 program, for nostalgia
added a section about scrolling and rotating data in memory.
removed :data and :const to simplify the Octo language. Since this is a (minor) breaking change I updated all example code and documentation. While I was at it I made some other improvements to the examples and documentation based on my new experience using Octo.
Merge branch 'gh-pages' of https://github.com/JohnEarnest/Octo into gh-pages
fixed tank.8o to reflect the changes as well.
special casing the assembly of the 'main' jump. If your main label is the first address in the program, octo will now avoid inserting a useless forward jump.
adding some basic information about the Chip8 registers to the Octo readme.
added a less dumb way of doing vertical sprite scrolling.
another reasonable approach for scrolling: block memcopies
Don't need to parse combobox content
Merge pull request #3 from SupSuper/combobox

Don't need to parse combobox content
Forgot to reset combobox value
Merge pull request #4 from SupSuper/combobox

Forgot to reset combobox value
some refactoring in preparation for adding forward declarations.
added support for forward declarations. you monsters.
don't spellcheck programs