Merge pull request #11 from aguibert/master

I2
Merge pull request #5 from lrohret/master

Finished Iteration 1 for Truck
Iteration 2 use cases
Merge pull request #12 from aguibert/master

I2 stuff
I2: Get all packages
I3: Get all warehouses
I2 methods
merge fixes
Merge pull request #6 from jdmielke/master

Jon's I2 stuff
Merge pull request #9 from aguibert/master

Andy's