Removing escape characters from stdout/stderr.

The standard out and error output when coming from Foreman have escape
characters that show colors when displayed in the console. Since these
characters are also being displayed in the console and DEBUG log, they
cause more visual confusion than anything. Exemple:

Before changes:

```
[\x1b[32m INFO\x1b[0m \x1b[34m2014-01-17 14:05:42\x1b[0m \x1b[36mInit\x1b[0m] Initialization of Hammer CLI (0.0.14) has started
```

After changes:

```
[ INFO 2014-01-17 14:05:42 Init] Initialization of Hammer CLI (0.0.14) has started
```