Merge pull request #8 from xpavlic4/master

link to our zip file on GitHub
Merge pull request #9 from xpavlic4/master

Null vs. Option
Collections exercises - Pending: Maps
Fixes and a hint
Merge pull request #12 from sebnozzi/master

Initial implementation of Collections (issue #7)
Pattern Matching exercises - in progress
Focus on immutability. Sets. Maps. Better comments
(Collections) Improvements to the comments
Merge branch 'master' of https://github.com/scala-vienna/DevFest2013-Workshop
Replaced "equals" and "==" for "===" in pattern-matching tests
Classes and Objects final
Classes and Objects tutorial
functions: first cut
Merge pull request #13 from rafacm/functions

functions: first cut
functions: updated documentation
Merge pull request #14 from rafacm/functions

functions: updated documentation
Fixed FunctionSuite, it broke the build before and compiler was not able to compile tests
finalized pattern matching exercises
fixed link for NullExerciseSuite.scala
fixed typo in CollectionsSuite