title: Return primitive values in OCMock
body: <p>I tried the documentation: <a href="http://ocmock.org/reference/#argument-constraints" rel="nofollow noreferrer">http://ocmock.org/reference/#argument-constraints</a> and I can't make work to return any value different of 0</p>
  
  <p>My code is working with:</p>
  
  <pre><code>    OCMStub([self.mockCurrentUser tipOptionSelected]).andReturn(0);
  </code></pre>
  
  <p>How can I do something like:</p>
  
  <pre><code>    OCMStub([self.mockCurrentUser tipOptionSelected]).andReturn(OCMOCK_VALUE([OCMArg isNotEqual:0]);
  </code></pre>
  
  <p>I want to that my stub return any Int except 0.</p>
  
  <p>Thanks</p>