Swapped images on 4-4 to better go along with the way heaps work
Updated the 'Hello World' snipped at the beginning to include a for-loop example, illustrating the declaration of the iterating variable before the for statement rather than in it
Updated the .cpp and .md files mentioning for-loop iterating variable declarations. I have not updated the .cpp.html or the index.html files since you generate those
Merge branch 'master' of https://github.com/mrecachinas/pdr into mrecachinas-master
Merge branch 'mrecachinas-master'