Add Flask-QueryInspect extension

I'm requesting that my extension Flask-QueryInspect be added to the approved list.

Flask-QueryInspect is a Flask extension that provides metrics on SQL queries executed for each request. It assumes use of and relies upon SQLAlchemy as the underlying ORM.

I believe I've met all of the requirements from http://flask.pocoo.org/docs/extensiondev/#approved-extensions

* Docs: https://github.com/noise/flask-queryinspect
* PyPI: https://pypi.python.org/pypi/Flask-QueryInspect
* Tests: https://travis-ci.org/noise/flask-queryinspect

Please let me know if there is anything else required.