Expected identifier error in IE8

[kevana]

Same as react-redux #232, also affects dock-monitor and log-monitor.

[kevana]

If the solution is to switch back to CommonJS modules for now I can put a PR together

[gaearon]

If you have time please do create the PRs. Note that for backward compat the monitors should still have default exports, so their entry points might look pretty much like the code generated by Babel.

[gaearon]

We decided to not support IE8. React is also dropping IE8 compat guarantees in the next version.