Added pull request link (Joonas Meriläinen)
Lecture 2: Tasks 1-7 done. Lecture 6: Task 2 done
Merge pull request #76 from HeikkiAlanen/master

Lecture 2: Tasks 1-7 done. Lecture 6: Task 2 done
Links to lecture tasks added.
Merge pull request #77 from HeikkiAlanen/master

Links to lecture tasks added.
Link to project added.
Merge pull request #78 from HeikkiAlanen/master

Link to project added.
Merged branch manualy
Merge pull request #62 from merilainen-metropolia/patch-5

Added pull request link (Joonas Meriläinen)