Feature/request data json

[Haniyya]

This PR changes the appearance of examples and allows for request_data of :PUT :PATH :POST requests to be displayed as json. Which for a lot of people is easier than the standard query-string.
This is part and precursor of #4 which fixes some of the markup.

A few changes are made here:

1. Examples are no longer pre-formated when passed to the template. Instead the normal case will be to have Hash-examples that have their own partial and a seperate one for simple String examples.
2. The @params attribute of the Extractor::Recorder contains more information about the request and is copied to request_data_json when serializing. This field stays untouched until it reaches the template (i didn't use params here since it was being modified on deserialization).
3. The included Bootstrap was updated to 3.3.7.
4. There is (incomplete and not working, fixed in Feature/better example display #4 ) markup for method display.