the example is out of date on [bootstrap] in readme

[Customize Output](https://github.com/ericclemmons/grunt-angular-templates#customize-output)

actually the `script` variable now is the statements in the `templateCache` function, not a full function script string.

So, when i try to use _that example_ to test, of course the build flow break down when i try to minify the file with the illegal output