variety/variety — pull request #48 by todvora (2014-10-30 16:08:00+00:00)
Title: Results printed as a ascii table (and added json switch)

Hi,
This is basic implementation of results formated as ascii table:

```
| key | types | occurrences | percents |
| ------------------ | ------------ | ----------- | -------- |
| _id | ObjectId | 5 | 100 |
| name | String | 5 | 100 |
| bio | String | 3 | 60 |
| pets | String,Array | 2 | 40 |
| birthday | String | 2 | 40 |
| someBinData | BinData-old | 1 | 20 |
| someWeirdLegacyKey | String | 1 | 20 |
```

Could you please review the code?

Ascii format is the default. There is optional ```outputFormat=json``` switch. Next step should be to provide possibility to mute all the debug output and print only valid JSON.