Merge pull request #12 from kojiromike/patch-1

Fix Spelling Errors

Merge branch 'mamuz-master'

Remove 'Onion Architecture' suggestion and change 'Hexagonal Architecture' description. Close #3.

Merge branch 'master' of https://github.com/mamuz/learning-oop-in-php into mamuz-master

Merge pull request #10 from marcj/patch-1

Merge pull request #15 from williamfn/fix_clean_code_link

Fix the "Clean Code" book link

Update README.md

Update README.md

Fixed typos in contributing

Create contributing page

Add videos about reflection, design patterns and security

fixing typos

Merge pull request #5 from luismilanese/master