Allow RequireJS to work in an environment where `navigator` is not defined.
Fixes #890, mentions r.js.cmd for windows users
Fixes #888, remove script for all undef cases
Add a circular dupe test
Already passes but was an issue for alameda
more windows usage info for r.js
Fixes #903, skipDataMain option to avoid data-main processing
add new test to list of tests
Merge pull request #899 from eviltrout/no_navigator

Allow RequireJS to work in an environment where `navigator` is not defined
Merge remote-tracking branch 'remotes/jrburke-original/master'