Update README.md

tested on new brython version
fix for issue#4

Fix for issue#4: https://github.com/kikocorreoso/brythonmagic/issues/4
Update README.md
Update README.md
Update README.md
Update README.md
updated notebooks
added -f and -e options to display results directly on jsfiddle.net
added info for -f and -e options to display results directly on jsfiddle.net
added info for -f and -e options to display results directly on jsfiddle.net ion the example notebook
correct bug in jsfiddle iframe (-e option)
re-run the nb and include the -f and -e options in the initial explanation
fix typo on README.md
Merge pull request #3 from kikocorreoso/master

update