First Pass for Gem

The first cut at making this a gem usable by other projects.
More Setup for Gem

More setup for the gme including getting setup for testing with an empty
test file.
Removed Commented Requires
Moved dotgrid.rb to bin/

Should have used git mv ... oh well.
Further Work on Gem
Remove dot_grid-0.0.1.gem

Removed the gem file and added *.gem to .gitignore
Changes For Gem

These changes were suggested by Drew DePonte to make everything more
gem-like.
Fixed the shebang line
Merge pull request #8 from slabounty/convert_to_gem_2

Convert to Gem