Fix 'disable_usage' feature.
Remove unused VERSION constant.
Merge branch 'fix/28' into develop
Close #28

* fix/28:
  Fixing relative path of the target directory
Fix EventInterface and php 5.3 compatibility.
Incremental on ZFTool Diagnostics
Incremental on ZFTool Diagnostics.
Incremental, finish runner and runlistener with tests.
Add basic Diagnostic\Test classes
Increase test coverage.
Add DiagnosticsController, fix various bugs, promote UnknownResult to main NS.
Add verbose console reporter, add usage info, add more tests.
Add more diag tests to ZFTool module.
Add browser-based diagnostics, add ExtensionLoaded debug info.
Move http diag route to separate file.
Add tests.
Add expansion of php function name, allows using standard functions as tests.
Add docs.
Add docs' screenshots.
Add diag usage info to README.md
Alias newest dev-master zf2 components to work around 2.1.4 Zend\Console bugs.