Fix incorrect attribute / Use template-specific version of Lo-dash

[shinnn]

• At the current version, readonly attribute is mistyped and regarded as spellcheck= (See the screenshot below). So I fixed it as a boolean attribute.

  

• I replaced Underscore.js with the template-specific version of Lo-dash, which is built with lodash include="template" command. (See http://lodash.com/custom-builds for more details about custom build.) It includes only template engine functions and doesn't include unnecessary features.

[moznion]

Nice patch!

Thank you.

[moznion]

Do I re-build Lo-dash when it is updated?

[shinnn]

Yes. If you want to update it, you should install Node.js and run the following command:

$ [sudo] npm install -g lodash-cli
$ lodash inclide="template" -o <filename>

However, optimizing Lo-Dash is not necessary in this case, because chrome extensions will be installed locally and reducing file size is not important as it is for webapps.
It is mostly subject of personal preference.

If you prefer easier installation and update, you can directly download the full-featured version of Lo-dash.

[moznion]

Thanks :)