Use Coffeescript-compatible template expression wrapper

[helixbass]

Hi,

We have just released Coffeescript v2.5.0 with AST support + eslint-plugin-coffee ESLint custom parser + plugin

I got a bug report from someone trying to set up ESLint in a Vue + Coffeescript project

When I looked, the problem is that in parseExpressionBody() you are wrapping template expressions in 0(...), which doesn't parse in Coffeescript

So this PR updates to use [...] wrapper instead of 0(...)

[helixbass]

This appears to be the accurate location data for the trailing 1 in the expression abc + (1 in test/fixtures/ast/error-message-outside/source.vue

[helixbass]

Closing in favor of #62