Merge pull request #2 from renatocoutinho/master

Fixes a bug, removes the section on bifurcations and adds a "more info"
Comments added to time-delay example. Comments corrected in R tutorial. Links added to more info session in R tutorial
Merge pull request #3 from piklprado/master

Comments added to time-delay example. Comments corrected in R tutorial. ...
few typos in lemmings.R
Merge remote-tracking branch 'diogro/master'