enable yaml
yamlise team
add @cupakromer
add @yujinakayama
tweak stylesheet to centre team
yamlise alumni
add @dastels
add @srbaker
add @aslakhellesoy
add @spicycode
add @justinko
add @patmaddox
add @lukeredpath
add @btakita
alumni css tweak
Merge pull request #14 from rspec/add_extra_alumni

Adding extra team / alumni members