extend for utils
planner instance constructor related to #3
better planner module related to #3
removed bootstrap init file in favor of self initialization of each namespace
build system outputs only one file
creating a default instance of planner with data-api, related to #3
drawing planner with defaults
defaults to hour on rows
todos
removed jquery from helpers
moved many helpers and card methods to instance Mixin
planner mixin for card drawing
better init with data-api
added some test data
added utils for data-attributes management
plugin manager refactoring which allows a more simple plugins and planner initialization
slider plugin refactoring without jquery
removed jquery from main example
removed jquery from index
minor refactoring of plugin manager