Add examples into quickdoc

[zolotov]

For example, when showing the documentation for function Foo, if there's an ExampleFoo() function then the documentation of Foo should also show the contents of the ExampleFoo().

[dlsniper]

Do you mean the functions that start with ExampleDemoFunc from _test files? If so, that's an awesome idea.

[zolotov]

@dlsniper yes, I mean them

[dlsniper]

Ok, I've updated the description. Great idea.