Handle computed properties correctly and do not fail generation

[danez]

Fixes #317

This ignores complex computed properties.
Non complex ones (identifiers, literals) are prefixed with @computed# and otherwise handled like normal.

[fkling]

I didn't look at all the code, so maybe you already considered this: Should we try to resolve identifiers to their values and use that instead if it is a string or number?

[danez]

That's a good idea, will add this. String and number literals I can also use directly no need to prefix them.

{ ["name"]: x } // Should be "name" not "@computed#name"

[rotawebmail]

dynamic context type names fail the whole file

static contextTypes = {
[DYNAMIC_NAME]: ...
}
TypeError: Property name must be an Identifier or a Literal

why fail the entire file?
how to fix the problem?