Fix/custom classes

[ericawright]

Status: Ready for Review Owner: @ericawright Reviewers: @mikenikles @fractaltheory @jansepar @marlowpayne @stewartyu

Changes

• user was unable to add custom classes for appendTo and container options (unless they also used pikabu's built in classes)
• $viewport was not being defined when custom classes used
• $animators array was missing custom class when .pikabu_container class was not there

  Todos:

• [ ] Engineer +1

  Feedback:

none so far

How to Test

• in pikabu/examples/assets/js/main, add some custom options such as: container: '.m-pikabu-container', appendTo: '.m-pikabu-viewport', to the pikabu declarations (make sure to do this to all 4, or else it will look for the default elements which we will remove)
• in pikabu/examples/index.html change line 18 <div class="pikabu"> remove "pikabu" and add custom class name: ".m-pikabu-viewport"
• also in pikabu/examples/index.html change line 25 <div class="pikabu__container"> remove "pikabu_container" and replace with custom class "m-pikabu-container"
• run grunt serve
• go to http://localhost:3000/examples/

[stewartyu]

:clap:

[stewartyu]

Oh yeah... we should have tests to make sure this doesn't regress!

[ericawright]

accidentally aimed at master