Added querying anx past trades and order status.

Implemented the missing anx funcionality:

1) http://docs.anxv2.apiary.io/#post-%2Fapi%2F2%2F%7Bcurrency_pair%7D%2Fmoney%2Forder%2Fresult

2) http://docs.anxv2.apiary.io/#post-%2Fapi%2F2%2Fmoney%2Ftrade%2Flist