Merge pull request #1 from kernelsmith/readme_cleanup

fixes/removes a few extra chars from README.md
replaces most tabs with 2 sp, other style changes
removes tabs from readme.md
removes tabs from Rakefile, dels publish skyrack
spacing and code cleanup for bin/
line cleanup on gemspec
cleans up some code in lib/skyrack/instr.rb
adds some path/gem helps to lib/skyrack.rb
make the tests pass, encoding issues
removes extraneous 'then's from conditionals