Save mozmill json results and screenshots in reports directory
Save mozmill json results and screenshots in reports directory

Add a --reports-dir option to define a reports directory.

gunesacar/tor-browser-bundle-testsuite,gunesacar/tor-browser-bundle-testsuite,boklm/tbb-testsuite,boklm/tbb-testsuite,gunesacar/tor-browser-bundle-testsuite,boklm/tbb-testsuite,boklm/tbb-testsuite,gunesacar/tor-browser-bundle-testsuite,boklm/tbb-testsuite