Completed IPS -> AMS (get sequence node) UTest and implemented the logic as well (amsproxy.js). 

This commit includes Unit test for the IPS -> AMS.

As test data, I used a sample sequence node JSON found in  https://hub.pearson.com/confluence/display/AF/SequenceStart+API
with a snippet from Seann's for targetActivity field.

In order to pass the test, you must start redis server manually. Refer to https://docs.google.com/a/pearson.com/document/d/1T128CH4xjsvu6rjj_xWLXVrkqSz-tQtvBTPUAXZDrD8/edit?usp=sharing 
for Redis installation.