Fix broken tutorial link for creating Willie modules.
Merge pull request #623 from creftos/master

[docs]Fix broken tutorial link for creating Willie modules.
[movie] Fix 2nd Example

This is mostly to fix the Travis builds failing.
[ip] Fix Example

Also to fix the Travis Builds
[dice] Add a reply if .dice/.roll is called without arguments.
[dice] Fix #626. Willie will now give you an appropriate message if your dice don't have any sides.
Merge pull request #625 from creftos/master

[dice]Fix empty & invalid argument, close #624 & close #626
Merge pull request #629 from janandjohn3/patch-1

[tests] Fix a couple of examples
Merge branch 'master' of https://github.com/embolalia/willie