add skeleton of Button doc (see #214) and fix a few typos
Resolve #72: Merge LinearLayout and ViewStack samples to have one sample by widget
Fix https://github.com/ibm-js/deliteful/issues/207: do not use
assert.equal in tests, use assert.strictEqual instead.
Fix styling for IE9
Fix #202 LinearLayout: stop calling deliver() from buildRendering()
Fix #202 LinearLayout: stop calling deliver() from buildRendering()