* Initial Commit for Spark Java Article BAEL-498
* reverting main pom.xml and rollbacking accidental changes.
* Changes as per review:
1. Added UserService
2. Renamed UserStore to UserServiceMapImpl
3. Removed Empty spaces in User.java
4. Removed AppTest
5. Changes in SparkRestExample for using UserServiceMapImp instead of
UserStore static functions.
* Suggested changes in print messages.
* Changes as per comments on github... for PR:
https://github.com/eugenp/tutorials/pull/912
* Changes in editUser function as per guidance by Kevin.
* Clean up
* added 1.8 config for pom.xml
* Clean up.
* Removed junit dep.
* Added Application/json in response type.
Parth Joshi