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.