Minor corrections for the robot-simulator tests
Series test-file was checking for the wrong package
added simple-linked-list exercise
add simple-linked-list exercise to config
Merge pull request #67 from autark/robot-simulator

Minor corrections for the robot-simulator tests
Merge pull request #68 from autark/series

Series test-file was checking for the wrong package
Merge pull request #69 from autark/simple-linked-list

add simple-linked-list exercise