Minor change in Hello world demo
Minor change in Hello world demo

brython-dev/brython,brython-dev/brython,Hasimir/brython,kikocorreoso/brython,jonathanverner/brython,Hasimir/brython,brython-dev/brython,jonathanverner/brython,kikocorreoso/brython,Hasimir/brython,kikocorreoso/brython,Hasimir/brython,jonathanverner/brython,jonathanverner/brython