Support for #=> operator

[7rans]

It would be very cool if the #=> "operator", which is often used in comment examples, could be automatically translated into .assert ==.

[7rans]

This is now supported as of v2.3.0. Only thing to keep in my is that operator precedence can be a problem. For example, instead of:

1 + 1  #=> 2

You would have to do:

(1 + 1)  #=> 2

To make sure that 1 == 2 is not evaluated before the 1 + 1.