Add tests for mock runner type (#23)

Test for OSS currently fails as the runner type parameter is not
implemented
Implements runner type for mock goal (#23)
Fix license check configuration

Exclued soapui composite projects located in the it directory.
Remove duplication in mock and test mojo (#23)

As the mock and test runner shared parameters, we now configure these
parameters in only one place (abstract mojo) to avoid duplication.
Format
globalProperties old bug to be checked
Update readme for #23
Merge branch 'improvement-23-mock-runner-type'
Reorganize "new features" paragraph
Update pom description

Content
  - original plugin is developed by SmartBear (eviware has been acquired
    by smartbear SmartBear, announce on 2011-07-18)
  - maven-soapui-extension-plugin overrides smartbear pro and open source version
Update main description (fix typo)
Add a class to manage testsuite properties (#38)

Also add tests that show this class can add/update properties
Can modify properties of all project suites (#38)
fix year to 2013 in license header
Create a test case runner that will modify testsuite properties (#38)
Add integration tests to check testsuite properties modif (#38)
testSuiteProperties works in test goal #38

This is the first version of this parameter. It will be modified in the
future (currently it is a String{]) to be a custom object.
This new Object will let us implement new features such as overriding
properties in a subset of TestSuites.
Fix failing integration test

The test has failed since the implementation of testsuite properties
overriding when using the test goal.
In this test we consider that the runner type parameter is used by the
mojo when we found logs for SoapuiTestCaseRunner.

With the new feature, we add a new custom TestCaseRunner, so the logs
don't exist anymore.
The fix is to make this logs occur and ajust expected logs for the new
runner.
Reduce log verbosity #38
fix typo in error message