Fixing resetting mocks

Merge pull request #2 from mrkrstphr/fix-expected-calls

reset expectedCalls when resetting mock

It's like 1.1.0, but it works

Adding missing code in MockFunction::call() to return the return value.

Adds return value handling

Merge pull request #1 from mrkrstphr/return-values

Added ability to specify return values

Updated docs + such

1.0.1

Updating README example

Initial release

1.0.0

Updating README