Use reconnect-net instead of reconnect

We had problems installing all the dependencies for reconnect module on
one of our boxes (32-bit vanilla Ubuntu Trusty using npm 1.3). This
patch replaces reconnect with reconnect-net that doesn't depend on
sockjs or engine.io which are unneeded with gearman-coffee.
Merge pull request #12 from meetings/use-reconnect-net

Use reconnect-net instead of reconnect