A MongoDB adaptor for r2d2 connection pool.
Coming soon...
```rust extern crate r2d2; extern crate r2d2_mongodb;
use r2d2::Pool; use r2d2_mongodb::MongodbConnectionManagerBuilder;
fn main () { let manager = MongodbConnectionManagerBuilder::new() .withhost("localhost") .withport(27017) .withdb("admin") .withusername("root") .with_password("password") .build();
let pool = Pool::builder()
.max_size(64)
.build(manager)
.unwrap();
...
} ```