Imported overlord solution

Joe/Sophia,
I spent this morning re-doing my level_up fork and branches. I believe it is correct now. Each task now has its own branch containing nothing other than changes pertinent to the task itself.

I'm resubmitting a code-review pull-request for overlord.

Zamir
The activation code, activation step, and three separate attempts are pretty orthagonal to the test. I'd prefer to see:

```
Given I activate a bomb
And I attempt unsuccessfully to deactivate it 3 times
Then I should see it exploded
```