updated vintagejs to new vanilla version and jquery wrapper
allow functions to be passed as effect properties for calculation of e.g. curves
remove effect function feature. use self invoking functions instead
added sepia effect and fixed issue with screen layer
added vintage presets
added viewfinder to vintage preset
added use strict and renamed constructor to start with uppercase letter
conding standards
added docblock
update Readme
tabs to spaces
added reset method to the api and fixed a bug where viewFinderImageData was not declared