Update offersExercised.js

Numbers are swapped around when request is made in json format.

http://i.imgur.com/DyjokzO.png
Merge pull request #3 from ctl3354/patch-1

Update offersExercised.js
[task] add tokyo jpy to gateways
[fix] minor bug on issuer capitalization
[FEATURE] websocket based ledger importer
Merge branch 'develop' of github.com:ripple/ripple-data-api into develop
[task] importer: process improvements and optimizations
[TASK] fix setup process and document in readme
[task] import: improve restart logic