Updates .travis fil to gradle 1.11
Merge pull request #50 from mockito/update_travis_gradle_version_to_1_11

Updates .travis fil to gradle 1.11
Proposal to add packaging to mockito-testng with gradle
Issue 491, use long instead of int for the timeout related APIs. Merged Nandor Kracser <bonifaido@gmail.com> changes plus some minor changes.
Merge branch 'mockito-testng-packaging' of git://github.com/Vp3n/mockito into Vp3n-mockito-testng-packaging
(PR 49) Fixed PMD problem by extracting exception handling to a separate method.
adds the -stacktrace option to track the travis build issue
Tweaks error reporting in the gradle config