initial commit and initial design
add init doc
added note regarding vendor library initialization
add note regarding complex event and strategy function parameter
refactor directory structure, name, docs, add grunt tool, and various features

enable adding handlers; add basic example
adjust handler design to also pass in raw event
give handler correct parameters
enable tag whitelisting
enable custom events
fix example bug that caused multiple-tracking
add getting started in doc
bump version to 0.0.2
move event related code to event.coffee
bump version to 0.1.0
adjust code based on Vadim's feedback
enable global option
append versioning to built file
enable minification
enable context tracking all the way to top, bump to 0.1.3
enable data-semantic-tag; bump to version 0.1.4
enable context data on body; bump to version 0.1.5
fixed bug where data-semantic-tag's absense causes error
enable walking up and down; reorganize lib used in example