Update README and add session 6
update readme
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
add some changes to the content
Improving the drafting
Merge pull request #4 from codificadas/session_6

Session 6