Removing redundant QueryUnescape

Also simplifying switch statement to not also include assignment.

Signed-off-by: Sheena McCoy <sp.mccoy@modcloth.com>
Adding documentation to ParseDSN about the format of the DSN
Merge pull request #4 from modcloth/inject-timezone

Inject timezone
Move freeing of the bound parameters into bind()

So that the callers don't need to know the details.
Merge remote-tracking branch 'origin/master' into free-bound-parameters-after-execute

Conflicts:
	oci8.go