Use account_trustline_frozen rather than account_froze_trustline
Merge pull request #213 from ripple/freeze-parameter

Use account_trustline_frozen rather than account_froze_trustline
[FEATURE] add submit order to ripple-rest
[FEATURE] add cancel order to ripple-rest
[FIX] move exports to bottom
Merge pull request #212 from boxbag/submit-order

[FEATURE] add submit order and cancel order capabilities