Added support for requireJs 'define'.

Hello,

While working with the script I got the following error:
```
Uncaught TypeError: Cannot read property 'splice' of undefined almond.min.js:216
define almond.min.js:216
(anonymous function) tmpl.js:44
(anonymous function) tmpl.js:47
.............
(anonymous function) tmpl.js:10
```

As it turned out, Almond's/requireJs's define() function takes 3 params:
```function (name,deps,callback)```

Javascript-Templates's current implementation only passes the callback. Thus define() tries to use it as a name(first argument). To fix the problem, we need to pass all three parameters, just like I propose in my pull request:
```
window.define('tmpl', [], function() { // name, deps, callback
```

Hopefully, this will fix problem not only for me, but for the other people who uses the library. Wish you good luck!

Also, before seding pull request I wanted to run tests(yeah, this change is relatively small but still...) - to check everything's going well. README file doesn't contain info/command for this. It would be easier if you included this.

Thanks.