feat(tickets): first commit, preparePayment and prepareTicket

test/integration/integration-test.ts

@@ -348,6 +348,16 @@ describe('integration tests', function() {
     })
   })
 
+  it('ticket', function() {
+    return this.api.getLedgerVersion().then(ledgerVersion => {
+      return this.api
+        .prepareTicket(address, 1, instructions)
+        .then(prepared =>
+          testTransaction(this, 'ticket', ledgerVersion, prepared)
+        )
+    })
+  })
+
   it('isConnected', function() {
     assert(this.api.isConnected())
   })