Update CONTRIBUTING.md

Update the file path for the dev app file.
Merge pull request #309 from jacobthemyth/patch-1

Update CONTRIBUTING.md
Fix for mocha reporting weirdness with the updated mocha #313.
0.5.8
Added tests/data dir to fix travis build.
Updated Opera agent detection (#315).
0.5.9
0.5.10
Fix for process errors not gracefully handled in ci mode (#320).
0.5.11
Support for PhantomJS debugging
Added phantomjs breakpoint debugging support via `phantomjs_debug_port` option (#318, #319).
0.5.12
Fix mocha adapter not reporting all test results

By commit 6c890dc, reporting test result is delayed by setTimeout,
which may cause inconsistent order of event emitting, such as firing
"test-result" event after "all-test-results" event fired.

This commit prevents firing "all-test-results" if any test reporting is
delayed, so that we can always get "all-test-results" event after all of
"test-result" events have been fired.
Updated travis build image.
Fix for "clearErrorPopupMessage" error, #326.
0.5.13
Merge pull request #324 from kotas/fix-mocha-incomplete

Fix mocha adapter not reporting all test results
0.5.14
Re-implemented timeout option for ci #323.