Added Codility to interactive tutorials
Merge pull request #1214 from grogy/codility

Added Codility to problem sets
Merge pull request #1221 from ekeitho/master

add mooc classes for android
Merge pull request #1 from vhf/master

Update with vhf master
Add Linux succintly
Merge pull request #1222 from levibostian/master

Add Linux succintly
Added MATLAB book in Swedish
Merge pull request #1224 from WizuO/master

Added MATLAB book in Swedish
Add Read Ruby.
Merge pull request #1225 from weakish/add-read-ruby

Add Read Ruby.
add some brazillian articles about VIM
fix anchors
Merge pull request #1226 from drgarcia1986/master

Add some brazilian articles about VIM