Show good practice of cleaning up after statements in README
Add a Database#execute that, given some SQL, fetches all rows.
Clean up README
Add Database#executeScript and clean up sqlite.js
Add error param to example in README
Update README and package.json
Use async-testing for the place holder tests
Add statement#bindObject to bind placeholders using an object.
Improve awkward binding behaviour with Statement#bindArray.
Rename the Sqlite3Db class to Database, and move it to its own file