Expanded the example to create a functional task upload script

I have expanded `process.py` such that it is possible to use both a database or a json file to upload tasks.

It uses only core modules with the exception of [grequests](https://github.com/kennethreitz/grequests), which is used to perform HTTP pipelining.

In the pull request I am adding an example json file with a task. 
Here's the command to create a new task (`task11`) on the dev instance [mrdev.emacsen.net](http://mrdev.emacsen.net/) and upload the task contained in `example.json`.

```bash
$ python process.py --debug --server http://mrdev.emacsen.net/ test11 use-json example.json
```

Here's the result in maproulette:
* [interface](http://mrdev.emacsen.net/#t=test11/test11-265752390-cee97b0b9a4799afaf865edf0600ee1d)
* [api call](http://mrdev.emacsen.net/api/challenge/test1/task/test1-265752390-cee97b0b9a4799afaf865edf0600ee1d)

I am adding a simple server based on [bottle](http://bottlepy.org) that I used for testing purposes.