Test against 1.8.0RC1 on Travis CI
Test against 1.8.0RC1 on Travis CI

jmikola/mongo-php-library,jmikola/mongo-php-library,mongodb/mongo-php-library,mongodb/mongo-php-library,jmikola/mongo-php-library,mongodb/mongo-php-library,jmikola/mongo-php-library,jmikola/mongo-php-library-prototype,10gen-labs/mongo-php-library-prototype,mongodb/mongo-php-library