add learn section

also fix a missing br in the address

fixes #5.
added quick nav
Merge branch 'add-learn-section' into add-learn-to-nav
add learn to nav
Merge pull request #8 from colindean/add-learn-to-nav

Add learn to nav
Moves 'Thank You' section inside 'Who' section
add rails guides to learn list
Merge pull request #9 from colindean/patch-1

add rails guides to learn list
add ruby warrior
Merge pull request #10 from colindean/patch-1

add ruby warrior
add anyone can learn to code to learn section
Merge pull request #11 from colindean/patch-1

add anyone can learn to code to learn section