add displayType param on embed(closes #40)

Conflicts:
	src/components/core/core.js
	src/components/loader/loader.js

Conflicts:
	src/components/loader/loader.js
flash playback: checks if the given resource is a string before check its extension
sequence plugin: add #length and #playbackType methods
sequence plugin: add next event and helper methods
pip plugin: add addMasterContainer function to be used on sequence plugin
add a basic playlist plugin
playlist plugin: fix render() function
base object: fix wrong behavior when not passing options to the constructor
log plugin: ignore some annoying events
playlist: remove 'setContainers' method
s/PlaybackHandler/ContainerFactory/g (refs globocom/player #98)
core: s/playback_handler/container_factory