Fix for new API changes in meteor v0.9.1

The editor was broken because of new API changes in v0.9.1. I have fixed
them and got it working.
Bump api.versionsFrom in package.js to 0.9.1

We also need to bump versionsFrom to 0.9.1 in package.js as blaze in
0.9.0 and 0.9.1 is not compatible.
Merge @channikhabra's updates for 0.9.1, and update demo