Added basic instructions to README. Added ahoy-world.
Added support for exprs for obj literal field names.
Modified sandbox permissions to fix Mac OS X command line bug.
Merge branch 'master' into expr-fields
Used dyoo's define-runtime-path for the sandbox bug.
Merge branch 'master' into expr-fields
Modified dep mixin example to make mutable work.
Merge pull request #1 from brownplt/expr-fields

Exprs in field name position