get micropolar.js from micropolar gh-pages repo

small bug in hover ring that I hope is caused by old version
change d3 to micropolar d3 version
keep debugging
try to fix labelling issue on areaChart
one more try at label fix
try to fix micropolar.js PolarAreaChart labelling problem
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages
add examples of other micropolar chart types just using micropolar defaults
very minor wording change
another very small change
wording change
Merge pull request #4 from timelyportfolio/gh-pages

add examples of other chart types using micropolar defaults