Adds iteration overriding to to-css.
Adds support for zeroing out the transform origin of generated CSS.

Squashed commit of the following:

commit 986f0ac9626382a6d8bc1cf2e22aae0789c91d62
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Dec 2 21:28:26 2012 -0800

    Builds v.0.13.3.

commit a15fcfb10ca603b38c372dcb1577fa70b1c14056
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Dec 2 21:09:44 2012 -0800

    Adds code and tests for adding the CSS centering offset.
Drops test.all_unit_tests.html in favor of running tests via Grunt.
Updates testing section of the README.
Adds a trailing $ prompt to CLI sample.
Adds .jshintrc and updates code to pass JSHint.

Squashed commit of the following:

commit 641d868e8d3f4ca02cad7b39a435f4f4ed2c8b13
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 1 11:39:55 2013 -0800

    Fixes placement of the license in the generated rekapi.js file.

commit a986b8f33597faa6978a532ba740792e8e71e4c6
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 1 11:29:23 2013 -0800

    Drops intro and outro in favor of rekapi.wrapper.js.

commit ac658793d4100e766e5310a3767b5790bb26c6dc
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 1 10:50:54 2013 -0800

    Migrates legacy JSLint options from  rekapi.license.js to .jshintrc.

commit cefb24c4dba0a04d14e538c5b229ac38d9ca1a12
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 1 10:38:13 2013 -0800

    Builds v.0.13.4.

commit 1c0647555afd245682a09057b4af5d857a720646
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 1 10:30:08 2013 -0800

    Lint some more src files.

commit 116fc3ff6c496eaa2b137ead483c0d20643c58ca
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 1 10:18:24 2013 -0800

    Adds .jshintrc and fixes some linting errors.
Rename grunt.js to Gruntfile.js.  Adds lint options.
Renames Gruntfile again, gets it right this time.
Reverts changes to library wrapping at build time.

Squashed commit of the following:

commit a1b38c407d32444ff67ef254696825789868bd6b
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Wed Jan 9 21:00:28 2013 -0800

    Rebuilt v.0.13.4.

commit c2a723589d61c76b16bd60d522d764fd4a6c7d00
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 8 21:36:13 2013 -0800

    Tweak lint settings to not target intro or outro.

commit b4cbe7467dc39c2f301ef429c588379cd2cca675
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jan 8 20:43:18 2013 -0800

    Reverts wrapper changes.
Adds Google Group link and updates README.
Fixes Markdown error.