clears the screen correctly if showing an image
clears the screen correctly if showing an image

jdloft/tkn,mbeasley/tkn,sl33p/tkn,jacaetevha/tkn,hauleth/tkn,rogercampos/advanced-ruby,fxn/tkn,demiazz/spb-frontend-july-2014,leckylao/tkn,minhorb/new-dawn-presentation,juandebravo/tkn,minhorb/new-dawn-presentation,arturoherrero/tkn,mindriot101/python-best-practices-presentation,ngtk/tkn