New: Added the number of tests launched

Previously, when a suite of tests ended, we didn't know how many tests were launched.
Now we know. The formats of the message can be :

-   All tests passed in the test suite.
    Total tests: 176

-   Test suite failed with 0 errors and 1 failures and 175 successes
    Total tests : 176
Fixed: removed double methods...
Merge pull request #27 from Dogild/NumberOfTests

New: Added the number of tests launched