added template option accepting a function instead of string. added sublime text project file to gitignore, updated doc, updated readme
added sublime text workspace file to gitignore
Don't attempt to destroy popover that doesn't exist
reintegrated develop in master + updated docs
Simplify nav template
Merge branch 'master' into nav-template

Conflicts:
	build/js/bootstrap-tour.js
	build/js/bootstrap-tour.min.js
	docs/assets/js/bootstrap-tour.js
	docs/assets/js/bootstrap-tour.min.js
	src/coffee/bootstrap-tour.coffee
Adjust merge