Code Inconsistency

In Writing Code for Humans, the section with the two similar examples is incorrect. The two examples actually do the OPPOSITE things. See Below:

Now, compare it to this:

```
// Same array:
var myArray = ['hello', 'something', 'awesome'];
if (myArray.indexOf('hello') == -1) {
// Pretty freakin' clear, AMIRITE!?
}
```

Or even this, using Underscore:

```
// Same array:
var myArray = ['hello', 'something', 'awesome'];
if (_(myArray).contains('hello')) {
// Also pretty freakin' clear right?
}
```

I would recommend changing the first example to this (but please do whatever is most clear.):

```
// Same array:
var myArray = ['hello', 'something', 'awesome'];
if (myArray.indexOf('hello') >= 0) {
// Pretty freakin' clear, AMIRITE!?
}
```