Splitwise

To create maven project:

- mvn archetype:generate -DgroupId=com.splitwise -DartifactId=splitwise -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

Steps:

- Add Users
- Operations
	- Add Expense
	- Show Expense History
	- Balance Sheet
	- Settle Up

Sample Input:

- EXPENSE u1 200 2 u1 u2 PERCENT 80 20