correcting command to remove the whole index form elasticsearch
Merge pull request #23 from erdmann123/master

correcting command to remove the whole index from elasticsearch
function -> def and warning about pip install
Merge pull request #24 from fresnik/master

function -> def and warning about pip install
Adding example from fridays lecture
Merge branch 'master' of github.com:reykjavik-university/2014-T-514-VEFT
Fixing merge conflicts