Added option for sub-sections

Along with sub-sections, each section is now wrapped in a <section> tag
Added option for sub-sections

Content Changes: Each section is now wrapped in a <section> and all sub-sections wrapped in a <div>. This makes sorting easier and should fix some of the highlighting issues

Nav Changes: The sub-sections are setup in a child <ol> to the the parent section's <li>
Merge branch 'refs/heads/feature/add-sub-sections' into feature/fix-scrolling

* refs/heads/feature/add-sub-sections:
  Added option for sub-sections
  Added option for sub-sections
Fixed active state when scrolling

Plugin now checks to see if each <section> is within visual range as set by "scrollOffset" in settings. If multiple sections are within view, all are set as "active"
Added option for sub-sections

Content Changes: Each section is now wrapped in a <section> and all sub-sections wrapped in a <div>. This makes sorting easier and should fix some of the highlighting issues

Nav Changes: The sub-sections are setup in a child <ol> to the the parent section's <li>
Cleaned the code up

Much needed re-organization of everything before I get too far into v2
Section condition fix

Need to test against the headings since we've added the "top" section to the section var
Merge pull request #13 from jimmynotjim/feature/add-sub-sections

Added support for sub-sections
Merged changes from PR #13
Added a wrapper to fix #17

Also moved the function appending the headline back to the nav setup
Fixed console message
Merge pull request #16 from jimmynotjim/feature/fix-scrolling

Fixed active state when scrolling
Added Grunt and dependencies

Created some simple tests, fixed a bug when finding sections
Re-added readme content

Got removed from the jquery grunt init
removed the un-prefixed versions
Readme updates and tweaks
Fixed the gitignore

Damn .DS_Store files
Wrote some better tests

Still learning the best way to apply tests
Fixed link text error when a defined section heading is the first child of the article

Loving unit testing already, never would have found this error
Added sub-section test and teardown function to all modules