"geting" changed to "getting"
"instatiating" to "instantiating"

There seems to be a weird mix of US and UK spelling in here (ie "customize" vs "customise"), but I don't know which one to favour (or "favor" as the case may be).
"represting" to "representing"; "situtation" to "situation"
Merge branch 'dev' of https://github.com/tisdall/ColanderAlchemy