updated readme, moved urls back to chart-helpers
fixed bug camel_case, changed test_contents
fixed iframe frameborder, height
Merge branch 'develop'

* develop:
  fixed palette bug and allowed radius to accept an input vector
  added heatmap and moved params
Merge branch 'develop'

* develop:
  added font parameter
  Added Show one/all renamed Group to Groups
  fixed bug when colors > 20 (remove transparency)
  changed default font to arial added unique to Array JS
  allow NA values
updated d3, added doc to d3_aux, refactored points template
refactored d3_aux and points template
rename categorical to ordinal_domains
remove console.log
fix ordinal_domains bug
using @include instead of manually setting the Collate field in DESCRIPTION
uploaded man and indentations
added clickme_hide option
added new tooltip
Use cm() instead of clickme(template, ...)
updated global assets
improved new_template
removed heatmap template
added lines template
improved points template