Rewrite Espresso links to point to 'testing/+/android-support-test/espresso'.
Rewrite Espresso links to point to 'testing/+/android-support-test/espresso'.

Fixes #9.

romannurik/AndroidSDKSearchExtension,sam-yr/AndroidSDKSearchExtension,sam-yr/AndroidSDKSearchExtension,romannurik/AndroidSDKSearchExtension,romannurik/AndroidSDKSearchExtension