Include README and CHANGELOG in gem
BaseApi::data_key

This replaces the rather annoying:
```ruby
def <key>
  data[key]
end
```
This method also supports unrolling, so nested keys are easy to access.
However there is no error handling for missing parameters.
App::find internal changes

Since the server now accepts /apps/<appname> there is no longer a need
for the /apps?name query
Dawn::request response hijacking