fixing a bdd_test for required 'Test' prefix

There was a bdd_test not running, as the newer go testing package requires tests prefixed with Test to execute (I'm using 1.3.1).

Output is now:

```
eduncanmac1:~/go/src/github.com/eduncan911/zen [master]$ go test
     Equality any integer should equal itself 
     Equality any integer should not equal nil 
     Setup should execute before 
PASS
ok  	github.com/eduncan911/zen	0.007s
```

also removing unneeded ()s (go fmt removed it)