added free 2
added free 3
Revert "added free 3"

This reverts commit 2dd11c3863f2d6e6eec5ef9831ba798b2ef06045.
Revert "added free 2"

This reverts commit 56806d09ac79b846fc55511d5057c8eda81651d4.
Merge branch 'master' of github.com:molopez/part4.demo