mvhenten/validate-arguments-js — pull request #3 by abbakym (2014-03-09 14:53:51+00:00)
Title: can ommit "isa" key in spec object

When using the library I found myself creating lots of large validation objects typically looking like
```
{
message: {
isa: 'object'
},
author: {
isa: 'object'
},
id: {
isa: 'natural'
},
ts: {
isa: 'number'
}
}
```
This is great, but a bit too verbose, especially if there are lots of such code in one file. So I'd like to write it like this:
```
{
message: 'object',
author: 'object',
id: 'natural',
ts: 'number'
}
```

I've added a simple test, which doesn't cover all the scenarios, but I'd like to share the idea and know what you think. If that doesn't conflict with your vision, I can polish the pull request.