Fixed a small error in the pool creation example
Merge pull request #8 from billthornton/patch-1

Fixed a small error in the pool creation example
Minor comment tweaks.
Fix typo in comment.
Pool improvements

- Add TestOnBorrow health check.
- Make pool code threqa-safe with respect o application changing
  exported pool fields.
- Prevent goroutine from getting stuck fetching a connection from the
  pool while other goroutines are returning connections to the pool.
Fix links to godoc.org.
Logging for short write error