define sample graph widths to 100%
stub out ring chart
add simple single ring chart
add multi-ring
nesting rings
add ring to docs
add ring to homepage
clean code
rebuild dist
Merge pull request #24 from nikolaswise/v1.1

ring charts
width => thickness
Merge pull request #25 from paulcpederson/v1.1

width to thickness
change radius to diameter, adjust doc
set graph to flag when data is ready
draw axes only once when data is ready
add random number controller
work with line directive to gs
neuter core
move filter to graph
update all directives to new structures