tweaked formatting and clarified multi-targets
Merge branch 'master' of github.com:kenhub/giraffe
allow setting y-axis minimum of a graph

allow setting y-axis minimum of a graph, defaults to 0 as per rickshaw
default
allow setting graph height

allow setting graph height, defaults to 300
document graph min and height settings
Merge branch 'master' of github.com:fpants/giraffe
compiled coffeescript
Add support for colspan attribute in metric definitions
updated README and demo dashboard with colspan info