small update to address firefox bug
Merge pull request #68 from cloudfoundry-community/linechartfirefoxbug

small update to address firefox bug
remove tooltip illegal character
Merge pull request #70 from cloudfoundry-community/tooltipfix

remove tooltip illegal character
Updates on the readme so it flows in a more readable fashion.
Merge pull request #72 from cloudfoundry-community/README_update

Udates on the readme so it flows in a more readable fashion.
modified ExecuteConcurrently() to limit workers throughput based on a
supplied pattern