onBlur support added to TextInput

All inheriting widgets also benefit from this feature.
onClick support added to MultiAutoComplete.

Closes #989
fix #1002 Travis build failure due to npm SSL error

Let's disable certificate check temporarily (before we migrate to Node
0.10).

Close #1003.
feat #995 Send coverage to https://coveralls.io

This commit adds a new build in travis which runs tests
with coverage enabled, and which sends coverage results
to https://coveralls.io.

Close #995