newtests/README.md
newtests/README.md

Summary:
I mostly intended the newtests/tool_test_example test to act as
documentation, but a README.md wouldn't hurt, especially if it's easier to find
than the example test

Reviewed By: mroch

Differential Revision: D3458798

fbshipit-source-id: b6040275a007836ed231d5ac13e215dc1209e63c

jdelStrother/flow,samwgoldman/flow,ylu1317/flow,popham/flow,samwgoldman/flow,ForbesLindesay/flow,mroch/flow,gabro/flow,gabro/flow,MichaelDeBoey/flow,mroch/flow,AgentME/flow,jamesgpearce/flow,jamesgpearce/flow,JonathanUsername/flow,TiddoLangerak/flow,jeffmo/flow,AgentME/flow,cesarandreu/flow,claudiopro/flow,fletcherw/flow,popham/flow,gabelevi/flow,TiddoLangerak/flow,gabro/flow,jgrund/flow,JonathanUsername/flow,jeffmo/flow,mroch/flow,chenglou/flow,fletcherw/flow,claudiopro/flow,fletcherw/flow,ForbesLindesay/flow,JonathanUsername/flow,cesarandreu/flow,nmote/flow,facebook/flow,ForbesLindesay/flow,samwgoldman/flow,fletcherw/flow,gabro/flow,nmote/flow,ylu1317/flow,ylu1317/flow,jamesgpearce/flow,jeffmo/flow,jdelStrother/flow,mroch/flow,ForbesLindesay/flow,AprilArcus/flow,popham/flow,mroch/flow,claudiopro/flow,AprilArcus/flow,gabelevi/flow,MichaelDeBoey/flow,mroch/flow,popham/flow,jamesgpearce/flow,facebook/flow,JonathanUsername/flow,TiddoLangerak/flow,ForbesLindesay/flow,chenglou/flow,cesarandreu/flow,ForbesLindesay/flow,facebook/flow,chenglou/flow,facebook/flow,jeffmo/flow,fletcherw/flow,jdelStrother/flow,nmote/flow,claudiopro/flow,samwgoldman/flow,facebook/flow,jgrund/flow,gabelevi/flow,claudiopro/flow,popham/flow,jeffmo/flow,AprilArcus/flow,chenglou/flow,samwgoldman/flow,gabelevi/flow,nmote/flow,JonathanUsername/flow,chenglou/flow,AgentME/flow,TiddoLangerak/flow,ylu1317/flow,facebook/flow,jamesgpearce/flow,MichaelDeBoey/flow,AprilArcus/flow,jgrund/flow,AgentME/flow,JonathanUsername/flow,jgrund/flow,jamesgpearce/flow,jgrund/flow,TiddoLangerak/flow,JonathanUsername/flow,samwgoldman/flow,gabro/flow,popham/flow,gabro/flow,facebook/flow,popham/flow,nmote/flow,AprilArcus/flow,ylu1317/flow,mroch/flow,samwgoldman/flow,gabelevi/flow,fletcherw/flow,jgrund/flow,AprilArcus/flow,gabelevi/flow,jdelStrother/flow,AgentME/flow,MichaelDeBoey/flow,jeffmo/flow,jdelStrother/flow,cesarandreu/flow,MichaelDeBoey/flow,nmote/flow,chenglou/flow,jdelStrother/flow,nmote/flow,jamesgpearce/flow,gabelevi/flow