Update handlebars doc to say binding is one directional.
Also fix some typos.
fixes #131; fixes #94; travis added and removed deliteful dependency
Pass context to lang.getObject(), to workaround dojo bug.
See https://bugs.dojotoolkit.org/ticket/17829 for details.

Other option to get the context might be
`typeof global === "undefined" ? window : global` or simply `window`.

Fixes #138.
lint
keys to run against travis regression against ibm-js saucelabs account