Minor README updates
Minor README updates

- Remove warning now that we are approaching alpha
- Most of these badges don't mean anything, or we've stopped using them
- Update running the tests

jmikola/mongo-php-driver-prototype,10gen-labs/mongo-php-driver-prototype,mongodb-labs/mongo-php-driver-prototype,mongodb-labs/mongo-php-driver-prototype,xplodwild/mongo-php-driver-prototype,jmikola/mongo-php-driver,10gen-labs/mongo-php-driver-prototype,jmikola/mongo-php-driver,serebro/mongo-php-driver-prototype,derickr/mongo-php-driver,derickr/mongo-php-driver-prototype,jmikola/mongo-php-driver,xplodwild/mongo-php-driver-prototype,derickr/mongo-php-driver,serebro/mongo-php-driver-prototype,mongodb/mongo-php-driver,derickr/mongo-php-driver-prototype,jmikola/mongo-php-driver-prototype,bjori/mongo-php-driver-prototype,serebro/mongo-php-driver-prototype,mongodb-labs/mongo-php-driver-prototype,jmikola/mongo-php-driver-prototype,mongodb/mongo-php-driver,jmikola/mongo-php-driver,xplodwild/mongo-php-driver-prototype,xplodwild/mongo-php-driver-prototype,bjori/mongo-php-driver-prototype,bjori/mongo-php-driver-prototype,derickr/mongo-php-driver-prototype,bjori/mongo-php-driver-prototype,mongodb-labs/mongo-php-driver-prototype,derickr/mongo-php-driver,derickr/mongo-php-driver-prototype,derickr/mongo-php-driver,jmikola/mongo-php-driver-prototype,mongodb/mongo-php-driver,mongodb/mongo-php-driver,10gen-labs/mongo-php-driver-prototype,bjori/mongo-php-driver-prototype,serebro/mongo-php-driver-prototype,mongodb/mongo-php-driver,derickr/mongo-php-driver-prototype,10gen-labs/mongo-php-driver-prototype,jmikola/mongo-php-driver-prototype,xplodwild/mongo-php-driver-prototype,10gen-labs/mongo-php-driver-prototype,mongodb-labs/mongo-php-driver-prototype,derickr/mongo-php-driver,jmikola/mongo-php-driver,serebro/mongo-php-driver-prototype,derickr/mongo-php-driver