Implemented the solution for hw2-2-spring using Mongo and MongoTemplate
classes
Finished implementing homework. Now to test with mongoProc and fix any
issues.
Resolving issues with mongoProc

- Tests require the same HTML output so I had to take in the FreeMarker
templates. As such added FreeMarker as another view layer for Spring MVC
- If you want to see how things look with Thymeleaf then comment out the
dependency for spring-boot-starter-freemarker