Update FAQ entry for Pants and Buck.

--
MOS_MIGRATED_REVID=89501886

docs/FAQ.md

@@ -63,9 +63,10 @@ Why doesn't Google use ...?
   Gradle's, letting Bazel understand exactly what each action does.
   This allows for more parallelism and better reproducibility.
 
-* Buck, Pants: Both tools were created by ex-Googlers at Twitter and
-  Facebook. They have been modeled on Bazel, but their feature set
-  has not caught up to Bazel, so it's not an alternative for us.
+* Buck, Pants: Both tools were created and developed by ex-Googlers at
+  Twitter and FourSquare, and Facebook respectively. They have been modeled
+  after Bazel, but their feature sets are different, so they aren't viable
+  alternatives for us.
 
 
 What is Bazel's origin?