{→ spec/opal}/rubyspec
{mri_spec → spec/cli}, spec/{* → opal/*}
spec/opal/{ospec → mspec/opal}
Enter mspec/opal/rake_task.rb
Add a dir glob helper for mspec rake task
Cleanup gitignore
spec/opal/{corelib → core}
Move gzip and uglify helpers to Opal::Builder::Util
Quotes
Move mspec/opal stuff back to lib and complete cleanup