Dropping our incomplete support for node 0.11

issue #1287, issue #1147

- our support was partial, is based on node-sqlite3, which has dropped partial support as well
- node 0.11 is a dev version, and has lots of breaking changes
- we will add node 0.12 support when it is released
Merge pull request #1314 from ErisDS/no-node-11

Dropping our incomplete support for node 0.11
added suffix to tag helper

closes #607

- added suffix as optional parameter to tag helper