Simplified will return

[fabian]

As proposed in #144 by @ciaranmcnulty and @whatthejeff here's another PR for a simplified use of will($this->returnValue($value)):

$stub->method('doSomething')->willReturn(...);
$stub->method('doSomething')->willReturnMap(...);
$stub->method('doSomething')->willReturnArgument(...);
$stub->method('doSomething')->willReturnCallback(...);
$stub->method('doSomething')->willReturnSelf(...);
$stub->method('doSomething')->willReturnOnConsecutiveCalls(...);
$stub->method('doSomething')->willThrowException(...);

[whatthejeff]

Looks great! Thanks @fabian and @ciaranmcnulty :)

[ciaranmcnulty]

Awesome stuff ;-)