added tooltip handlers
Merge branch 'master' of github.com:blueflag/peanut

# By Allan Hortle
# Via Allan Hortle
* 'master' of github.com:blueflag/peanut:
  class naming for multiple classes
  heat map color

Conflicts:
	dist/peanut.js
	dist/peanut.min.js
	src/Peanut.Line.js