Add direct unit tests for options/preset
Dependencies: bump separated-coverage to a more colorblind friendly version
Tests: Add direct tests for test/utils.js
Docs: Update packages and extensions sections with new URLs.
Docs: Update grunt-jscs URL.
Remove line break validation from crockford preset

Closes gh-614
Add additional check in crockford preset

Add check to disallow line breaks before blocks in crockford preset.
As verified on jslint.com this code does not pass validation:

var foo = 0;
if (foo > 0)
{
    foo = 0;
}

It fails with "Expected exactly one space between ')' and '{'.".

Closes gh-616
Prepare for version 1.6.1
1.6.1
Support predefined values for another three rules

* requireSpaceAfterKeywords: Support a true value for predefined keywords

* disallowSpacesAfterKeywords: Support true value for disallowing
  space for predefined keywords

* requireCurlyBraces: Support true value for requiring braces
  for predefined keywords

Closes gh-620
Fixes #218
Stronger tests for predefined values