delete unnecessary line
Added a link
added new design pattern post link
Merge pull request #69 from mushfiq/master

added new design pattern post link
Merge pull request #66 from cihann/fix-duplicate-line

delete unnecessary line
Yet another link
Added a link under Flask
Added new link under Debugging section
Update pycrumbs.md
Update authors.md
Merge pull request #70 from Dawny33/patch-1

Update pycrumbs.md
Merge pull request #71 from Dawny33/patch-2

Update authors.md
Added new section and link

Added new section "Web Servers" and a link under it.
Added a link under Fabric
Remove duplicate link
Merge pull request #72 from kuyan/patch-1

Remove duplicate link
Added section for Functional Programming and a link under Django
add a link to design patterns
Merge pull request #73 from oxnz/master

add a link to design patterns
Added Python Programming Tutorials youtube link