remove "~YUIDOC_LINE~!" from generated documentation

This happens because YUI does a regex replace to close end of lines with
"~YUIDOC_LINE~!". If you put the description of the parameter on the
next line, you need to have at least one word on the line the parameter
is defined. e.g.:

/**
  @method foo
  @param wait A
    thing I am describing
**/

vs

/**
  @method foo
  @param wait
    A thing I am describing
**/

fixes emberjs/website#376
Merge pull request #2331 from fivetanley/weird-yuidoc-line

remove "~YUIDOC_LINE~!" from generated documentation
Added documentation, alternatives to Ember.run.next.

Closes #2294.
Merge pull request #2330 from machty/run-next-docs

Added documentation, alternatives to Ember.run.next.
fallback for browsers that don't support domElement.outerHTML

At least Firefox browsers < version 11 do not support the outerHTML
property for DOM elements. The fallback is to use
XMLSerializer.serializeToString when outerHTML is not available.