Increase timeouts when running tests with npm test

This makes sense in general, and is important in particular because AppVeyor
seems to be quite slow.
Support Windows backslash paths in test_require_all.js

On Windows, that file would try to require scripts that run things
Increase time tolerance for test

It fails on AppVeyor
Merge pull request #58 from pereckerdal/windows-fixes

Fix problems with Windows