Bug 990737 - Suggest 'pip install' for unit test prereqs; r=aki
Bug 990737 - Suggest 'pip install' for unit test prereqs; r=aki

lissyx/build-mozharness,mrrrgn/build-mozharness,escapewindow/mozharness,lissyx/build-mozharness,kartikgupta0909/mozilla-mozharness,kartikgupta0909/mozilla-mozharness,lundjordan/mozharness,lundjordan/mozharness,armenzg/build-mozharness,simar7/build-mozharness,mozilla/build-mozharness,simar7/build-mozharness,kartikgupta0909/gittest,mozilla/build-mozharness,kartikgupta0909/gittest,walac/build-mozharness,mrrrgn/build-mozharness,armenzg/build-mozharness,escapewindow/mozharness,kartikgupta0909/build-mozharness,kartikgupta0909/build-mozharness,walac/build-mozharness