Merge pull request #7 from konstantinkoval/master

remove a unnecessary character

Merge pull request #6 from antons/master

Fixed a typo in the macro.

allow arbitrary delegate names in the macro

rename example to Tests

update comment

only support instance methods

Allow arbitrary primitive types for default values.

build cache lazily

cleanup code

update test case to cover nil delegate

add testcase for required call

Further simplify code, cover class and required methods as well

update description