[PATCH] [libcxx] Add list of currently known buildbots to libc++ homepage

[Dan Albert]

================
Comment at: www/index.html:140
@@ +139,3 @@
+   <!--======================================================================-->
+   <p>These are the known libc++ build bots</p>
+   <ul>
----------------
Let's drop the "known". It makes it sound like we can't keep track of them :)

http://reviews.llvm.org/D4947